Pub Date : 2023-09-26DOI: 10.1163/23524588-20230017
A. Myint, Thu Thu1, J. Klink-Lehmann2, J. Dürr1, C. Borgemeister1
Edible insects are a good source of proteins, fats, and micronutrients for human consumption. Crickets are one of the most widely reared insects worldwide. They require less capital spending and less space and water consumption while offering more food, employment, and income possibilities than conventional animal farming. Additionally, raising crickets may aid in achieving various sustainable development objectives. Although crickets are Myanmar’s most popular edible insects, a few farmers are presently rearing them. The farming business is not thriving as in other countries mainly because consumers primarily eat crickets collected from the wild. Using the extended theory of planned behaviour, this study identifies factors possibly impacting the intention to eat reared crickets in Myanmar, alongside perceived product quality, consumer knowledge, and trust in value chain actors. Data were collected through telephone interviews, resulting in a valid data set of 212 respondents from Yangon and Mandalay who recently ate crickets collected from the wild. The result of the structural equation modelling revealed that participants are ready to accept reared crickets as a food source. Consumption intention towards reared crickets is directly influenced by consumers’ attitudes, perceived behavioural control, and trust in producers. Concurrently, it is indirectly influenced by consumer knowledge of the environmental friendliness of cricket farming. Subjective norms, trust in retailers, and perceived product quality do not significantly affect the intention to eat crickets. As trust in producers is the new main predictive factor, cricket farmers should build public trust by giving transparency in the production process, thereby achieving a more favourable attitude towards reared insects, possibly leading to higher consumption levels.
{"title":"Behaviour intention to eat reared crickets in Myanmar: the effects of trust, knowledge, and perceived quality","authors":"A. Myint, Thu Thu1, J. Klink-Lehmann2, J. Dürr1, C. Borgemeister1","doi":"10.1163/23524588-20230017","DOIUrl":"https://doi.org/10.1163/23524588-20230017","url":null,"abstract":"Edible insects are a good source of proteins, fats, and micronutrients for human consumption. Crickets are one of the most widely reared insects worldwide. They require less capital spending and less space and water consumption while offering more food, employment, and income possibilities than conventional animal farming. Additionally, raising crickets may aid in achieving various sustainable development objectives. Although crickets are Myanmar’s most popular edible insects, a few farmers are presently rearing them. The farming business is not thriving as in other countries mainly because consumers primarily eat crickets collected from the wild. Using the extended theory of planned behaviour, this study identifies factors possibly impacting the intention to eat reared crickets in Myanmar, alongside perceived product quality, consumer knowledge, and trust in value chain actors. Data were collected through telephone interviews, resulting in a valid data set of 212 respondents from Yangon and Mandalay who recently ate crickets collected from the wild. The result of the structural equation modelling revealed that participants are ready to accept reared crickets as a food source. Consumption intention towards reared crickets is directly influenced by consumers’ attitudes, perceived behavioural control, and trust in producers. Concurrently, it is indirectly influenced by consumer knowledge of the environmental friendliness of cricket farming. Subjective norms, trust in retailers, and perceived product quality do not significantly affect the intention to eat crickets. As trust in producers is the new main predictive factor, cricket farmers should build public trust by giving transparency in the production process, thereby achieving a more favourable attitude towards reared insects, possibly leading to higher consumption levels.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"21 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-22DOI: 10.1163/23524588-20230077
D. Akiyama, T. Kaewplik, T. Fujisawa, T. Kurosu, Y. Sasaki
In this study, a self-selected feed design was conducted for Japanese food wastes, considering the macronutrients (protein, lipid, carbohydrate) and six feed options and three options for vegetable wastes, and performance was compared with commercial diet to determine the usefulness of the feed design method and the possibility of using food waste in Japan were examined by comparing the performance of the feed design method with commercial diet. Data on self-selection diet design for crickets at different growth stages were obtained to determine the differences in feed consumption rates and nutrient requirements among stages. The results showed that it is possible to achieve cricket weight and feed conversion efficiencies (0.5-0.8) comparable to those of commercial diets using food residues when macro-nutrients are considered, and abundant options are provided. On the other hand, the use of only vegetable wastes resulted in lower cricket weight and higher feed conversion efficiency (0.8-1.4). Based on feed consumption rates, bread bran, rice bran, and fish meal were found to be suitable feeds among Japanese food waste for production in all growth stages, while bean curd and sake less were found to be suitable for production in some growth stages. Data obtained from self-selections separated by growth stage revealed that the percentage of feed consumption varied greatly among growth stages, being about 50-68% in the late growth stage. Percentages of macronutrients and micronutrients were also found to vary by growth stage. Protein percentages were found to be higher in the second week after hatching. Lipids were highest in the first week and decreased thereafter. Crude fiber was lowest in the fourth week. Ash content did not change significantly at all stages. This research is the first attempt at self-selection of crickets in different growth stages, and the data obtained can contribute to feed design.
{"title":"Crickets (Gryllus Bimaculatus) using food waste usefulness of self-selection feed design method through each growth stage","authors":"D. Akiyama, T. Kaewplik, T. Fujisawa, T. Kurosu, Y. Sasaki","doi":"10.1163/23524588-20230077","DOIUrl":"https://doi.org/10.1163/23524588-20230077","url":null,"abstract":"In this study, a self-selected feed design was conducted for Japanese food wastes, considering the macronutrients (protein, lipid, carbohydrate) and six feed options and three options for vegetable wastes, and performance was compared with commercial diet to determine the usefulness of the feed design method and the possibility of using food waste in Japan were examined by comparing the performance of the feed design method with commercial diet. Data on self-selection diet design for crickets at different growth stages were obtained to determine the differences in feed consumption rates and nutrient requirements among stages. The results showed that it is possible to achieve cricket weight and feed conversion efficiencies (0.5-0.8) comparable to those of commercial diets using food residues when macro-nutrients are considered, and abundant options are provided. On the other hand, the use of only vegetable wastes resulted in lower cricket weight and higher feed conversion efficiency (0.8-1.4). Based on feed consumption rates, bread bran, rice bran, and fish meal were found to be suitable feeds among Japanese food waste for production in all growth stages, while bean curd and sake less were found to be suitable for production in some growth stages. Data obtained from self-selections separated by growth stage revealed that the percentage of feed consumption varied greatly among growth stages, being about 50-68% in the late growth stage. Percentages of macronutrients and micronutrients were also found to vary by growth stage. Protein percentages were found to be higher in the second week after hatching. Lipids were highest in the first week and decreased thereafter. Crude fiber was lowest in the fourth week. Ash content did not change significantly at all stages. This research is the first attempt at self-selection of crickets in different growth stages, and the data obtained can contribute to feed design.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"9 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139337607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-21DOI: 10.1163/23524588-20230087
M. S. Rho, K.P. Lee
The yellow mealworm, Tenebrio molitor L. (Coleoptera: Tenebrionidae), is one of the few edible insects commercially produced around the globe as alternative protein sources for food and feed. Temperature and nutrition are the two most influential environmental determinants of growth and development in insects, but little is known about their combined effects in T. molitor. Here we examined how temperature and dietary protein:carbohydrate (P:C) balance act in concert to influence key performance traits in T. moltior larvae reared on one of the 36 treatment combinations of six temperatures (19, 22, 25, 28, 31, and 34 °C) and six protein:carbohydrate ratios (P:C = 1:5, 1:2, 1:1, 2:1, 5:1, and 1:0). Apart from females accumulating higher lipid content than males, there were no sex differences in all measured traits. Survivorship was high at low temperatures (<25 °C) and high P:C ratios (>1:1), but decreased with increasing temperature and decreasing P:C ratio. An increase in temperature accelerated development but resulted in reduced pupal mass. Thermal optimum for pupal mass (19.3 °C) was thus much lower than that for development time (28.1 °C). Growth rate peaked at 27.9 °C and P:C 1.65:1 and decreased as both temperature and P:C ratio deviated from their optimum. All four key performance traits (survivorship, development time, pupal mass, and growth rate) were expressed at high levels and, hence, optimized at temperatures between 25.7 °C and 27.4 °C and P:C ratios between 1.17:1 and 2.94:1. Food consumption rate was the highest at a high P:C ratio of 8.4:1, whereas post-ingestive food utilization was the most efficient at a moderate P:C ratio of 1:1.27. The rate and efficiency of food processing were optimized at temperatures between 24.5 °C and 29.9 °C and P:C ratios between 1:1.01 and 3.98:1. Our results have implications for improving the production and nutritional value of T. molitor larvae.
{"title":"Identifying the optimal combinations of temperature and macronutrient balance for rearing Tenebrio molitor larvae","authors":"M. S. Rho, K.P. Lee","doi":"10.1163/23524588-20230087","DOIUrl":"https://doi.org/10.1163/23524588-20230087","url":null,"abstract":"The yellow mealworm, Tenebrio molitor L. (Coleoptera: Tenebrionidae), is one of the few edible insects commercially produced around the globe as alternative protein sources for food and feed. Temperature and nutrition are the two most influential environmental determinants of growth and development in insects, but little is known about their combined effects in T. molitor. Here we examined how temperature and dietary protein:carbohydrate (P:C) balance act in concert to influence key performance traits in T. moltior larvae reared on one of the 36 treatment combinations of six temperatures (19, 22, 25, 28, 31, and 34 °C) and six protein:carbohydrate ratios (P:C = 1:5, 1:2, 1:1, 2:1, 5:1, and 1:0). Apart from females accumulating higher lipid content than males, there were no sex differences in all measured traits. Survivorship was high at low temperatures (<25 °C) and high P:C ratios (>1:1), but decreased with increasing temperature and decreasing P:C ratio. An increase in temperature accelerated development but resulted in reduced pupal mass. Thermal optimum for pupal mass (19.3 °C) was thus much lower than that for development time (28.1 °C). Growth rate peaked at 27.9 °C and P:C 1.65:1 and decreased as both temperature and P:C ratio deviated from their optimum. All four key performance traits (survivorship, development time, pupal mass, and growth rate) were expressed at high levels and, hence, optimized at temperatures between 25.7 °C and 27.4 °C and P:C ratios between 1.17:1 and 2.94:1. Food consumption rate was the highest at a high P:C ratio of 8.4:1, whereas post-ingestive food utilization was the most efficient at a moderate P:C ratio of 1:1.27. The rate and efficiency of food processing were optimized at temperatures between 24.5 °C and 29.9 °C and P:C ratios between 1:1.01 and 3.98:1. Our results have implications for improving the production and nutritional value of T. molitor larvae.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"1 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-20DOI: 10.1163/23524588-20230072
S. Siddiqui, N. Ngah, A. Eddy-Doh, I. Ucak, M. Afreen, I. Fernando, S. Singh, M.A. Shah, S.N. Povetkin, R. Castro‐Muñoz
As the global population continues to grow, traditional protein sources like meat and fish are becoming increasingly unsustainable due to their environmental impact. Edible insects, on the other hand, are highly nutritious, require minimal resources to produce, and emit significantly fewer greenhouse gases than traditional livestock. Lepidoptera, one of the most diverse insect orders, contains some popular edible species that have been consumed traditionally for centuries across the globe. Based on this review, about 24 families with a total of about 350 edible lepidopteran species were recorded. They are often praised for their excellent nutritional value, such as having high protein and healthy fat content. Edible lepidopterans also contain minerals, essential amino acids, and vitamins, making them a nutritious addition to a balanced diet. They also contain bioactive compounds which have various nutraceutical and pharmaceutical properties. Furthermore, some edible lepidopterans can be farmed and require minimal space and resources. However, there are significant challenges associated with their use as food. One of the primary challenges is the lack of regulations governing their production and distribution, which creates uncertainty for consumers and businesses alike. Consumer acceptance is also a significant barrier to the widespread adoption of insects as food. To overcome these challenges, there is a need for clear regulations that ensure the safety and quality of insect-based products. Furthermore, it is important to raise awareness about the nutritional and environmental benefits of edible insects as sustainable food for the future to promote their acceptance among consumers.
{"title":"Edible Lepidoptera as human foods – a comprehensive review","authors":"S. Siddiqui, N. Ngah, A. Eddy-Doh, I. Ucak, M. Afreen, I. Fernando, S. Singh, M.A. Shah, S.N. Povetkin, R. Castro‐Muñoz","doi":"10.1163/23524588-20230072","DOIUrl":"https://doi.org/10.1163/23524588-20230072","url":null,"abstract":"As the global population continues to grow, traditional protein sources like meat and fish are becoming increasingly unsustainable due to their environmental impact. Edible insects, on the other hand, are highly nutritious, require minimal resources to produce, and emit significantly fewer greenhouse gases than traditional livestock. Lepidoptera, one of the most diverse insect orders, contains some popular edible species that have been consumed traditionally for centuries across the globe. Based on this review, about 24 families with a total of about 350 edible lepidopteran species were recorded. They are often praised for their excellent nutritional value, such as having high protein and healthy fat content. Edible lepidopterans also contain minerals, essential amino acids, and vitamins, making them a nutritious addition to a balanced diet. They also contain bioactive compounds which have various nutraceutical and pharmaceutical properties. Furthermore, some edible lepidopterans can be farmed and require minimal space and resources. However, there are significant challenges associated with their use as food. One of the primary challenges is the lack of regulations governing their production and distribution, which creates uncertainty for consumers and businesses alike. Consumer acceptance is also a significant barrier to the widespread adoption of insects as food. To overcome these challenges, there is a need for clear regulations that ensure the safety and quality of insect-based products. Furthermore, it is important to raise awareness about the nutritional and environmental benefits of edible insects as sustainable food for the future to promote their acceptance among consumers.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"1 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-20DOI: 10.1163/23524588-20230050
H. Kim, S.Y. Ji, B.G. Kim
The objectives were to determine effects of growth stages (experiment 1) of black soldier fly (BSF; Hermetia illucens) and processing methods (experiment 2) on in vitro nutrient digestibility of BSF for pigs and to develop prediction equations for estimating in vitro nutrient utilization in BSF. In experiment 1, in vitro ileal disappearance (IVID) and in vitro total tract disappearance (IVTTD) of dry matter (DM) and nitrogen in BSF larva (15 d of age), BSF prepupa (d 17), and BSF adults (d 34) were determined. The IVID of DM and nitrogen in BSF larva was higher () than that in BSF prepupa and BSF adults. The IVTTD of DM in BSF larva and BSF prepupa was higher () than that in BSF adults. In experiment 2, the BSF larva employed in experiment 1 was processed using 4 different methods to obtain dried larva press liquid, dried larva press cake, partially defatted larvae meal (PDLM), and fully defatted larvae meal. The IVID of DM and nitrogen in PDLM was higher () than that in other 3 ingredients. The IVTTD of DM in dried larva press liquid and PDLM was higher () than that in dried larva press cake or fully defatted larvae meal. Based on the feed ingredients employed in experiments 1 and 2, quadratic and linear prediction equations were developed for IVID of DM (; ) and IVTTD of DM (; ), respectively, in BSF-derived ingredients using nitrogen as an independent variable. Overall, the nutrients in BSF larva at 15 d of age were better utilized compared with older growth stages, and the nutrients in PDLM were better utilized compared with other processing methods. Equations for IVID and IVTTD of DM were developed using nitrogen concentrations as an independent variable in BSF-derived ingredients for pigs.
{"title":"In vitro nutrient digestibility values of black soldier fly as a swine feed ingredient can be estimated by nitrogen concentrations","authors":"H. Kim, S.Y. Ji, B.G. Kim","doi":"10.1163/23524588-20230050","DOIUrl":"https://doi.org/10.1163/23524588-20230050","url":null,"abstract":"The objectives were to determine effects of growth stages (experiment 1) of black soldier fly (BSF; Hermetia illucens) and processing methods (experiment 2) on in vitro nutrient digestibility of BSF for pigs and to develop prediction equations for estimating in vitro nutrient utilization in BSF. In experiment 1, in vitro ileal disappearance (IVID) and in vitro total tract disappearance (IVTTD) of dry matter (DM) and nitrogen in BSF larva (15 d of age), BSF prepupa (d 17), and BSF adults (d 34) were determined. The IVID of DM and nitrogen in BSF larva was higher () than that in BSF prepupa and BSF adults. The IVTTD of DM in BSF larva and BSF prepupa was higher () than that in BSF adults. In experiment 2, the BSF larva employed in experiment 1 was processed using 4 different methods to obtain dried larva press liquid, dried larva press cake, partially defatted larvae meal (PDLM), and fully defatted larvae meal. The IVID of DM and nitrogen in PDLM was higher () than that in other 3 ingredients. The IVTTD of DM in dried larva press liquid and PDLM was higher () than that in dried larva press cake or fully defatted larvae meal. Based on the feed ingredients employed in experiments 1 and 2, quadratic and linear prediction equations were developed for IVID of DM (; ) and IVTTD of DM (; ), respectively, in BSF-derived ingredients using nitrogen as an independent variable. Overall, the nutrients in BSF larva at 15 d of age were better utilized compared with older growth stages, and the nutrients in PDLM were better utilized compared with other processing methods. Equations for IVID and IVTTD of DM were developed using nitrogen concentrations as an independent variable in BSF-derived ingredients for pigs.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"80 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-20DOI: 10.1163/23524588-20230088
G. Eom, J. Shin, K.J. Lee
Mealworm (Tenebrio molitor) and their derivatives are sustainable ingredients in aquaculture feeds. This study evaluated the effect of fish oil (FO) replacement with mealworm oil (MO) on growth performance, non-specific immune responses and disease resistance against Vibrio parahaemolyticus for Pacific white shrimp (Litopenaeus vannamei). FO in a control diet (Con) was replaced with MO at levels of 25%, 50%, 75% and 100% (designated as MO25, MO50, MO75 and MO100, respectively). A total of 480 shrimp (initial mean body weight, 0.884 ± 0.004 g) were randomly distributed into 20 acrylic tanks (240 L) in quadruplicates groups and fed the experimental diets for 58 days. Growth performance was significantly higher in all MO groups than in Con group. Shrimp fed MO50 and MO75 diets showed significantly improved feed utilisation efficiency than shrimp fed Con diet. Lipid metabolism related-gene expressions of fatty acid binding protein and triacylglycerol lipase in hepatopancreas were significantly downregulated by increment of MO in the diets. Digestibility of protein, lipid, energy and dry matter were not significantly affected by the dietary treatments, while digestibility of poly-unsaturated fatty acids (PUFAs) were significantly decreased by dietary MO supplementation. The levels of n-3 PUFA in muscle and hepatopancreas were significantly decreased with increasing MO levels in the diets. Cumulative survival of shrimp in a challenge test against V. parahaemolyticus was higher in all MO groups and significantly higher in MO25 group than in Con group. Non-specific immune responses were significantly enhanced in all MO groups than in Con group. Replacement of FO with MO in the diets significantly increased haemolymph cholesterol and triglyceride levels. Our findings suggest that MO could be utilised as a promising substitute for FO in the diets of L. vannamei and optimal FO replacement level would be 50% for growth and 25% for disease resistance against V. parahaemolyticus.
黄粉虫（Tenebrio molitor）及其衍生物是水产养殖饲料中的可持续成分。本研究评估了用黄粉虫油（MO）替代鱼油（FO）对太平洋南美白对虾（Litopenaeus vannamei）生长性能、非特异性免疫反应和抗副溶血性弧菌疾病能力的影响。用 MO 替代对照日粮（Con）中的 FO，添加量分别为 25%、50%、75% 和 100%（分别称为 MO25、MO50、MO75 和 MO100）。将 480 只对虾（初始平均体重为 0.884 ± 0.004 g）随机分配到 20 个丙烯酸缸（240 升）中，每组四只，喂食实验日粮 58 天。所有 MO 组的生长性能均明显高于 Con 组。投喂 MO50 和 MO75 日粮的对虾的饲料利用率明显高于投喂 Con 日粮的对虾。日粮中添加 MO 后，肝胰腺中脂肪酸结合蛋白和三酰甘油脂肪酶的脂质代谢相关基因表达明显下调。蛋白质、脂类、能量和干物质的消化率受日粮处理的影响不大，而多不饱和脂肪酸（PUFA）的消化率则因日粮添加 MO 而明显下降。肌肉和肝胰腺中的 n-3 PUFA 含量随着日粮中 MO 含量的增加而明显降低。在针对副溶血性弧菌的挑战试验中，所有 MO 组虾的累积存活率都较高，MO25 组明显高于 Con 组。所有 MO 组的非特异性免疫反应均明显高于 Con 组。日粮中用 MO 替代 FO 能显著提高血淋巴胆固醇和甘油三酯水平。我们的研究结果表明，在凡纳滨鲤的日粮中，MO 是一种很有前景的 FO 替代品，最佳的 FO 替代水平为 50%，可促进生长，25% 可提高对副溶血性弧菌的抗病能力。
{"title":"Utilisation of mealworm (Tenebrio molitor) oil in Pacific white shrimp (Litopenaeus vannamei) diet","authors":"G. Eom, J. Shin, K.J. Lee","doi":"10.1163/23524588-20230088","DOIUrl":"https://doi.org/10.1163/23524588-20230088","url":null,"abstract":"Mealworm (Tenebrio molitor) and their derivatives are sustainable ingredients in aquaculture feeds. This study evaluated the effect of fish oil (FO) replacement with mealworm oil (MO) on growth performance, non-specific immune responses and disease resistance against Vibrio parahaemolyticus for Pacific white shrimp (Litopenaeus vannamei). FO in a control diet (Con) was replaced with MO at levels of 25%, 50%, 75% and 100% (designated as MO25, MO50, MO75 and MO100, respectively). A total of 480 shrimp (initial mean body weight, 0.884 ± 0.004 g) were randomly distributed into 20 acrylic tanks (240 L) in quadruplicates groups and fed the experimental diets for 58 days. Growth performance was significantly higher in all MO groups than in Con group. Shrimp fed MO50 and MO75 diets showed significantly improved feed utilisation efficiency than shrimp fed Con diet. Lipid metabolism related-gene expressions of fatty acid binding protein and triacylglycerol lipase in hepatopancreas were significantly downregulated by increment of MO in the diets. Digestibility of protein, lipid, energy and dry matter were not significantly affected by the dietary treatments, while digestibility of poly-unsaturated fatty acids (PUFAs) were significantly decreased by dietary MO supplementation. The levels of n-3 PUFA in muscle and hepatopancreas were significantly decreased with increasing MO levels in the diets. Cumulative survival of shrimp in a challenge test against V. parahaemolyticus was higher in all MO groups and significantly higher in MO25 group than in Con group. Non-specific immune responses were significantly enhanced in all MO groups than in Con group. Replacement of FO with MO in the diets significantly increased haemolymph cholesterol and triglyceride levels. Our findings suggest that MO could be utilised as a promising substitute for FO in the diets of L. vannamei and optimal FO replacement level would be 50% for growth and 25% for disease resistance against V. parahaemolyticus.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"4 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-20DOI: 10.1163/23524588-20230025
S. Siddiqui, O.F. Aidoo, M. Ghisletta, J. Osei-Owusu, Y. Saraswati, K. Bhardwaj, W. Khalid, I. Fernando, A.B. Golik, A.A. Nagdalian, J.M. Lorenzo, P. De Palo, A. Maggiolino
In Africa, food insecurity seems to be a continual problem as a result of various factors such as extreme poverty, water scarcity, land degradation, and climate change. As a result, chronic hunger and malnutrition are still prevalent in many African countries. Consequently, the utilization of available and affordable natural food sources is needed to accommodate the energy and nutritional requirements of the people, such as edible insects. Edible insects are abundant and locally available throughout Africa, hence could be utilized as low-cost, nutritious, and sustainable foods. Around 500 species have been recorded in sub-Saharan Africa out of the 2,100 known edible insect species worldwide. The consumption of insects, also known as entomophagy, has been historically practiced by indigenous people of Africa. To date, edible insects are seen in Africa as a good opportunity, particularly for rural households, to improve their livelihoods at an economic and nutritional level. Edible insects are a great source of energy and nutrients – and their rearing only requires a small amount of water, land and feeding resources. Entomophagy may also serve as an ecologically sound control measure for insect pests, such as locusts, that periodically wreak havoc on agricultural fields. The combination of being a highly nutritious food source and having economic advantages made edible insects very attractive in all the African regions. Their promotions into the diet would ameliorate the well-being of the population and boost economic growth in Africa. However, African countries need local and regional legal frameworks to achieve smooth functioning of marketing of edible insects and their products.
{"title":"African edible insects as human food – a comprehensive review","authors":"S. Siddiqui, O.F. Aidoo, M. Ghisletta, J. Osei-Owusu, Y. Saraswati, K. Bhardwaj, W. Khalid, I. Fernando, A.B. Golik, A.A. Nagdalian, J.M. Lorenzo, P. De Palo, A. Maggiolino","doi":"10.1163/23524588-20230025","DOIUrl":"https://doi.org/10.1163/23524588-20230025","url":null,"abstract":"In Africa, food insecurity seems to be a continual problem as a result of various factors such as extreme poverty, water scarcity, land degradation, and climate change. As a result, chronic hunger and malnutrition are still prevalent in many African countries. Consequently, the utilization of available and affordable natural food sources is needed to accommodate the energy and nutritional requirements of the people, such as edible insects. Edible insects are abundant and locally available throughout Africa, hence could be utilized as low-cost, nutritious, and sustainable foods. Around 500 species have been recorded in sub-Saharan Africa out of the 2,100 known edible insect species worldwide. The consumption of insects, also known as entomophagy, has been historically practiced by indigenous people of Africa. To date, edible insects are seen in Africa as a good opportunity, particularly for rural households, to improve their livelihoods at an economic and nutritional level. Edible insects are a great source of energy and nutrients – and their rearing only requires a small amount of water, land and feeding resources. Entomophagy may also serve as an ecologically sound control measure for insect pests, such as locusts, that periodically wreak havoc on agricultural fields. The combination of being a highly nutritious food source and having economic advantages made edible insects very attractive in all the African regions. Their promotions into the diet would ameliorate the well-being of the population and boost economic growth in Africa. However, African countries need local and regional legal frameworks to achieve smooth functioning of marketing of edible insects and their products.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"21 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-20DOI: 10.1163/23524588-20230124
D. Peguero, M. Gold, T. Duewell, A. Waser, B. Dubovcova, D. Vandeweyer, C. Zurbrügg, A. Mathys
Product safety is a major concern when using edible insects and insect-derived products due to insects’ diverse microbial community. Therefore, development of reliable post-processing treatments are required. Commonly used thermal treatments are effective against microorganisms but can have negative effects on product quality and nutritional value. Low-energy electron beam (LEEB) is an emerging non-thermal surface treatment technology for microbial decontamination of low water activity goods while preserving product quality. However, its potential application as an insect post-processing treatment has not been explored. To assess the effectiveness of LEEB treatment (250 keV and 12 kGy), three separate experiments were conducted with dried black soldier fly larvae (BSFL) and yellow mealworm (YMW). First, to assess LEEB’s potential in inactivating microorganisms in insect products, LEEB treatment was conducted on dried BSFL inoculated with Escherichia coli K-12. Secondly, the effect of LEEB treatment on reducing naturally occurring microbial populations after microwave drying was evaluated. Finally, a six-month controlled shelf-life study (24 °C, 65% RH) was conducted to assess the long-term efficacy of LEEB treatment by monitoring physical, chemical and microbiological parameters. LEEB achieved a 4-log10 reduction of inoculated E. coli K-12 on dried BSFL and was effective in reducing numbers of all microbiological parameters (aerobic and anaerobic counts) in YMW. Specifically, in non-inoculated samples, aerobic and anaerobic total viable counts (TVC) were reduced by approximately 4-log10 colony forming units per gram (cfu/g) in YMW. In contrast, LEEB treatment moderately reduced microbial numbers in BSFL, with aerobic and anaerobic TVC reduced by approximately 1–2-log10 cfu/g following LEEB treatment. Microbial counts in both BSFL and YMW remained lower than the control throughout the shelf-life. LEEB treatment did not have an influence on the peroxide value. Therefore, LEEB can be an effective and gentle processing technique to support safe dried insect products.
{"title":"Low energy electron beam to support safe whole dried insect products","authors":"D. Peguero, M. Gold, T. Duewell, A. Waser, B. Dubovcova, D. Vandeweyer, C. Zurbrügg, A. Mathys","doi":"10.1163/23524588-20230124","DOIUrl":"https://doi.org/10.1163/23524588-20230124","url":null,"abstract":"Product safety is a major concern when using edible insects and insect-derived products due to insects’ diverse microbial community. Therefore, development of reliable post-processing treatments are required. Commonly used thermal treatments are effective against microorganisms but can have negative effects on product quality and nutritional value. Low-energy electron beam (LEEB) is an emerging non-thermal surface treatment technology for microbial decontamination of low water activity goods while preserving product quality. However, its potential application as an insect post-processing treatment has not been explored. To assess the effectiveness of LEEB treatment (250 keV and 12 kGy), three separate experiments were conducted with dried black soldier fly larvae (BSFL) and yellow mealworm (YMW). First, to assess LEEB’s potential in inactivating microorganisms in insect products, LEEB treatment was conducted on dried BSFL inoculated with Escherichia coli K-12. Secondly, the effect of LEEB treatment on reducing naturally occurring microbial populations after microwave drying was evaluated. Finally, a six-month controlled shelf-life study (24 °C, 65% RH) was conducted to assess the long-term efficacy of LEEB treatment by monitoring physical, chemical and microbiological parameters. LEEB achieved a 4-log10 reduction of inoculated E. coli K-12 on dried BSFL and was effective in reducing numbers of all microbiological parameters (aerobic and anaerobic counts) in YMW. Specifically, in non-inoculated samples, aerobic and anaerobic total viable counts (TVC) were reduced by approximately 4-log10 colony forming units per gram (cfu/g) in YMW. In contrast, LEEB treatment moderately reduced microbial numbers in BSFL, with aerobic and anaerobic TVC reduced by approximately 1–2-log10 cfu/g following LEEB treatment. Microbial counts in both BSFL and YMW remained lower than the control throughout the shelf-life. LEEB treatment did not have an influence on the peroxide value. Therefore, LEEB can be an effective and gentle processing technique to support safe dried insect products.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"28 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-20DOI: 10.1163/23524588-20230042
S. Siddiqui, J. Osei-Owusu, B. Yunusa, T. Rahayu, I. Fernando, M.A. Shah, G. Centoducati
The residual population growth imposes an increase in food demand, driving humans to practice agricultural intensification on a large scale. Paradoxically, food and feed production may end up causing various environmental problems. At the same time, about 2.37 billion people in the World currently lack basic food security insurance. As a consequence, alternative sources that can substantially address the demand for food and feed sustainably are needed. Insect farming may offer an environmentally friendly solution for mitigating global food and feed challenges. The article aims to explore the potential of insects as sustainable food and feed sources while assessing their environmental impact, offering innovative solutions for global food security challenges. By highlighting the benefits of edible insects, the article supports informed decision-making and promotes sustainable practices. Mass production of edible insects has seen record growth over the decade, and their demand as future proteins is projected to reach up to 3 million tons in 2030. Additionally, insect farming is evidenced to be economically viable. To meet the demand for edible insects, a breakthrough such as the internet of things can be used to scale up production and processing. However, detailed environmental impact assessments are needed to predict scenarios of large-scale insect farming. Life cycle assessments of some edible insect production systems have validated that insect farming has various beneficial environmental impacts. The utilization of edible insects as food and feed is promising for significantly improving food security and the environmental sustainability of food.
{"title":"Prospects of edible insects as sustainable protein for food and feed – a review","authors":"S. Siddiqui, J. Osei-Owusu, B. Yunusa, T. Rahayu, I. Fernando, M.A. Shah, G. Centoducati","doi":"10.1163/23524588-20230042","DOIUrl":"https://doi.org/10.1163/23524588-20230042","url":null,"abstract":"The residual population growth imposes an increase in food demand, driving humans to practice agricultural intensification on a large scale. Paradoxically, food and feed production may end up causing various environmental problems. At the same time, about 2.37 billion people in the World currently lack basic food security insurance. As a consequence, alternative sources that can substantially address the demand for food and feed sustainably are needed. Insect farming may offer an environmentally friendly solution for mitigating global food and feed challenges. The article aims to explore the potential of insects as sustainable food and feed sources while assessing their environmental impact, offering innovative solutions for global food security challenges. By highlighting the benefits of edible insects, the article supports informed decision-making and promotes sustainable practices. Mass production of edible insects has seen record growth over the decade, and their demand as future proteins is projected to reach up to 3 million tons in 2030. Additionally, insect farming is evidenced to be economically viable. To meet the demand for edible insects, a breakthrough such as the internet of things can be used to scale up production and processing. However, detailed environmental impact assessments are needed to predict scenarios of large-scale insect farming. Life cycle assessments of some edible insect production systems have validated that insect farming has various beneficial environmental impacts. The utilization of edible insects as food and feed is promising for significantly improving food security and the environmental sustainability of food.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"79 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-20DOI: 10.1163/23524588-20230015
A. Baur, E. Batmaz, B. Gatternig, A. Delgado
Separation of Tenebrio molitor larvae from unwanted residues, like frass, feed or exuviae is a key process step for an industrial scale plant. One method to separate larvae from residues is using a zigzag air classifier. For designing and for an efficient operation of a zigzag air classifier, the terminal velocity is a key parameter to separate larvae from different residues with a high separation sensitivity. In this work, the terminal velocities of different larvae sizes are evaluated analytically, numerically and experimentally. For this, the sizes of 3 week to 12 week old larvae were used to calculate and simulate the terminal velocity. To validate the results, an experiment was carried out and compared with the analytical and numerical data. For this, a model for T. molitor larvae was designed to calculate the surface and volume of a larva to produce equivalent spheres with the same physical properties as a real larva. The results are showing similar curves with terminal velocities from 5 m/s for young larvae (3 weeks old) to 12 m/s for older larvae (12 weeks old). The deviations between each method are 1 m/s for smaller larvae and 1.5 m/s for bigger larvae. In further experiments and simulations, approaches with calculation methods for non-spherical particles are necessary to achieve results closer to reality due to the cylindrical shape of T. molitor larvae.
{"title":"Analytical and numerical characterisation of terminal velocities of Tenebrio molitor larvae in a new, asymmetrical zigzag based separation system","authors":"A. Baur, E. Batmaz, B. Gatternig, A. Delgado","doi":"10.1163/23524588-20230015","DOIUrl":"https://doi.org/10.1163/23524588-20230015","url":null,"abstract":"Separation of Tenebrio molitor larvae from unwanted residues, like frass, feed or exuviae is a key process step for an industrial scale plant. One method to separate larvae from residues is using a zigzag air classifier. For designing and for an efficient operation of a zigzag air classifier, the terminal velocity is a key parameter to separate larvae from different residues with a high separation sensitivity. In this work, the terminal velocities of different larvae sizes are evaluated analytically, numerically and experimentally. For this, the sizes of 3 week to 12 week old larvae were used to calculate and simulate the terminal velocity. To validate the results, an experiment was carried out and compared with the analytical and numerical data. For this, a model for T. molitor larvae was designed to calculate the surface and volume of a larva to produce equivalent spheres with the same physical properties as a real larva. The results are showing similar curves with terminal velocities from 5 m/s for young larvae (3 weeks old) to 12 m/s for older larvae (12 weeks old). The deviations between each method are 1 m/s for smaller larvae and 1.5 m/s for bigger larvae. In further experiments and simulations, approaches with calculation methods for non-spherical particles are necessary to achieve results closer to reality due to the cylindrical shape of T. molitor larvae.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"15 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：