Pub Date : 2023-01-09DOI: 10.1080/15538362.2023.2165596
Siddhi V. Baskaware, M. Deodhar
{"title":"Apomixis and Sexual Systems in Various Species of Garcinia with Special Reference to Garcinia Indica (Thouars) Choisy","authors":"Siddhi V. Baskaware, M. Deodhar","doi":"10.1080/15538362.2023.2165596","DOIUrl":"https://doi.org/10.1080/15538362.2023.2165596","url":null,"abstract":"","PeriodicalId":14014,"journal":{"name":"International Journal of Fruit Science","volume":"16 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86539884","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 : 2023-01-03DOI: 10.1080/15538362.2022.2162656
J. Lafond
{"title":"Rapid Diagnosis of the Nitrogen Status of the Wild Lowbush Blueberry","authors":"J. Lafond","doi":"10.1080/15538362.2022.2162656","DOIUrl":"https://doi.org/10.1080/15538362.2022.2162656","url":null,"abstract":"","PeriodicalId":14014,"journal":{"name":"International Journal of Fruit Science","volume":"36 19 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72731024","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 : 2023-01-02DOI: 10.1080/15538362.2022.2160410
C. D. Dung, H. Wallace, S. Bai, S. Ogbourne, S. Trueman
{"title":"Fruit Size and Quality Attributes Differ Between Competing Self-Pollinated and Cross-Pollinated Strawberry Fruit","authors":"C. D. Dung, H. Wallace, S. Bai, S. Ogbourne, S. Trueman","doi":"10.1080/15538362.2022.2160410","DOIUrl":"https://doi.org/10.1080/15538362.2022.2160410","url":null,"abstract":"","PeriodicalId":14014,"journal":{"name":"International Journal of Fruit Science","volume":"2009 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86244403","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 : 2022-12-31DOI: 10.1080/15538362.2022.2085231
T. K. Satekge, L. S. Magwaza
ABSTRACT Climacteric fruits continue to ripen postharvest, characterized by an increase in respiration and ethylene. Thus, the shelf-life, quality, and marketability of these fruits is reduced rapidly. One of the most important postharvest technology used to reduce the effect of exogenous and endogenous ethylene and extend the shelf-life of climacteric fruits is 1-methylcyclopropene (1-MCP). Currently, the application of 1-MCP on certain climacteric fruits is not commercially feasible due to the variable effects associated with this technology. In this review, factors that influence 1-MCP efficacy in climacteric fruits such as fruit maturity, concentration, genotypes, storage temperature and atmospheres, packaging material and application timing are critically discussed. In addition, current techniques used to mitigate the 1-MCP variability such as combined application with other postharvest treatments are briefly described and discussed. This review will provide an important information on the utilization of 1-MCP to prolong shelf-life in various climacteric fruits and help in the development of protocols for unregistered genotypes.
{"title":"Postharvest Application of 1-Methylcyclopropene (1-MCP) on Climacteric Fruits: Factors Affecting Efficacy","authors":"T. K. Satekge, L. S. Magwaza","doi":"10.1080/15538362.2022.2085231","DOIUrl":"https://doi.org/10.1080/15538362.2022.2085231","url":null,"abstract":"ABSTRACT Climacteric fruits continue to ripen postharvest, characterized by an increase in respiration and ethylene. Thus, the shelf-life, quality, and marketability of these fruits is reduced rapidly. One of the most important postharvest technology used to reduce the effect of exogenous and endogenous ethylene and extend the shelf-life of climacteric fruits is 1-methylcyclopropene (1-MCP). Currently, the application of 1-MCP on certain climacteric fruits is not commercially feasible due to the variable effects associated with this technology. In this review, factors that influence 1-MCP efficacy in climacteric fruits such as fruit maturity, concentration, genotypes, storage temperature and atmospheres, packaging material and application timing are critically discussed. In addition, current techniques used to mitigate the 1-MCP variability such as combined application with other postharvest treatments are briefly described and discussed. This review will provide an important information on the utilization of 1-MCP to prolong shelf-life in various climacteric fruits and help in the development of protocols for unregistered genotypes.","PeriodicalId":14014,"journal":{"name":"International Journal of Fruit Science","volume":"37 3 1","pages":"595 - 607"},"PeriodicalIF":2.4,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74422228","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 : 2022-11-13DOI: 10.1080/15538362.2022.2144983
Lin Chen, Yingyao Wu, Gui-Ju Sun
ABSTRACT In this study, antioxidant properties and enzymatic activities during fermentation of Kiwifruit from two Actinidia genotypes were evaluated. The samples were evaluated for solid content (SSC), total phenols, superoxide dismutase (SOD) and protease. Antioxidant capacity was determined using four assays: 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2’-azimo-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), hydroxyl radical (HR) scavenging rate and superoxide anion radical (SAR) scavenging rate. In the process of fermentation, the antioxidant and enzyme activities of artificial fermentation kiwifruit products were significantly higher than those of natural fermentation (p < .05). At the end of fermentation, the contents of total phenols and SSC in the fermented products of Hongyang kiwi fermentation (HKF) group and Cuiyu kiwi fermentation (CKF) group were significantly decreased, while the antioxidant properties of DPPH, ABTS, HR and SAR were significantly increased compared with the fresh kiwi (p < .05). In addition, the content of protease and superoxide dismutase was also increased. It was also found that the antioxidant properties and the enzyme activities in the HKF group were higher than those in the CKF group. ABTS and SOD activities were more obvious, which were 1.42 times and 2.22 times of the CKF, respectively. HKF group showed better nutritional properties and biological activities.
{"title":"Variations of Antioxidant Properties and Enzymes Activities during the Whole Fruit Fermentation of Two Kiwifruit (Actinidia chinenesis Planch.)","authors":"Lin Chen, Yingyao Wu, Gui-Ju Sun","doi":"10.1080/15538362.2022.2144983","DOIUrl":"https://doi.org/10.1080/15538362.2022.2144983","url":null,"abstract":"ABSTRACT In this study, antioxidant properties and enzymatic activities during fermentation of Kiwifruit from two Actinidia genotypes were evaluated. The samples were evaluated for solid content (SSC), total phenols, superoxide dismutase (SOD) and protease. Antioxidant capacity was determined using four assays: 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2’-azimo-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), hydroxyl radical (HR) scavenging rate and superoxide anion radical (SAR) scavenging rate. In the process of fermentation, the antioxidant and enzyme activities of artificial fermentation kiwifruit products were significantly higher than those of natural fermentation (p < .05). At the end of fermentation, the contents of total phenols and SSC in the fermented products of Hongyang kiwi fermentation (HKF) group and Cuiyu kiwi fermentation (CKF) group were significantly decreased, while the antioxidant properties of DPPH, ABTS, HR and SAR were significantly increased compared with the fresh kiwi (p < .05). In addition, the content of protease and superoxide dismutase was also increased. It was also found that the antioxidant properties and the enzyme activities in the HKF group were higher than those in the CKF group. ABTS and SOD activities were more obvious, which were 1.42 times and 2.22 times of the CKF, respectively. HKF group showed better nutritional properties and biological activities.","PeriodicalId":14014,"journal":{"name":"International Journal of Fruit Science","volume":"86 1","pages":"860 - 871"},"PeriodicalIF":2.4,"publicationDate":"2022-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85315531","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 : 2022-11-04DOI: 10.1080/15538362.2022.2137275
Crystal Jones Conner, A. Bocsanczy, B. Spakes-Richter, D. Norman
ABSTRACT Blueberry production is expanding rapidly in the United States and globally. In 2016, bacterial wilt was discovered in Florida blueberry production. Because of the international movement of plants, this disease poses a significant risk to production. The purpose of this project was to evaluate the resistance of blueberry species and cultivars to the three genetically distinct populations of Ralstonia identified in Florida blueberry production. Nineteen cultivars/species of Vaccinium were used in this study. Plants were selected from wild, northern, southern, midbush, lowbush, and rabbiteye varieties. Plants were inoculated with three genetically distinct strains of the pathogen, and experiments were replicated three times. Varying levels of quantitative (multigenic) bacterial wilt resistance were observed among varieties tested, with rabbiteye cultivars being the most resistant. These results are similar to bacterial wilt resistance observed in other agronomic crops. We also observed a unique specific qualitative (vertical) resistance in the rabbiteye cultivar ´Ochlockonee’. The pathogen was unable to colonize plant tissue and cause disease on this cultivar. This is the first report of qualitative resistance to Ralstonia solanacearum in blueberry. Both the multigenic and vertical resistance can be incorporated into blueberry breeding programs to mitigate potential losses to bacterial wilt.
{"title":"Bacterial Wilt Resistance in Blueberry Species","authors":"Crystal Jones Conner, A. Bocsanczy, B. Spakes-Richter, D. Norman","doi":"10.1080/15538362.2022.2137275","DOIUrl":"https://doi.org/10.1080/15538362.2022.2137275","url":null,"abstract":"ABSTRACT Blueberry production is expanding rapidly in the United States and globally. In 2016, bacterial wilt was discovered in Florida blueberry production. Because of the international movement of plants, this disease poses a significant risk to production. The purpose of this project was to evaluate the resistance of blueberry species and cultivars to the three genetically distinct populations of Ralstonia identified in Florida blueberry production. Nineteen cultivars/species of Vaccinium were used in this study. Plants were selected from wild, northern, southern, midbush, lowbush, and rabbiteye varieties. Plants were inoculated with three genetically distinct strains of the pathogen, and experiments were replicated three times. Varying levels of quantitative (multigenic) bacterial wilt resistance were observed among varieties tested, with rabbiteye cultivars being the most resistant. These results are similar to bacterial wilt resistance observed in other agronomic crops. We also observed a unique specific qualitative (vertical) resistance in the rabbiteye cultivar ´Ochlockonee’. The pathogen was unable to colonize plant tissue and cause disease on this cultivar. This is the first report of qualitative resistance to Ralstonia solanacearum in blueberry. Both the multigenic and vertical resistance can be incorporated into blueberry breeding programs to mitigate potential losses to bacterial wilt.","PeriodicalId":14014,"journal":{"name":"International Journal of Fruit Science","volume":"55 1","pages":"852 - 859"},"PeriodicalIF":2.4,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73595026","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 : 2022-10-31DOI: 10.1080/15538362.2022.2134272
Z. Pakkish, Soheila Mohammadrezakhani
ABSTRACT The quality of sweet cherry fruits decrease rapidly after harvest and in some cases does not reach the consumers properly due to the time require for transferring and market. Therefore, using chemical compounds is essential to increase durability and maintain its quality. This study was conducted to investigate the effects of arginine on postharvest quality of sweet cherry fruits. The sweet cherry fruits (Prunus avium L. cv TakDanehe Mashhad) were sprayed with arginine (0, 200, and 400 μM) one month before harvest. Fruits were harvested at commercial maturity stage according to acceptable color standards. After harvest, the fruits were transferred to the laboratory and immediately kept in cold storage with temperature of 1°C with 90–95% relative humidity (RH) for 20 days. The results showed that in treated fruits, electrolyte leakage, active oxygen production, and lipid peroxidation were decreased. The activity of antioxidant enzymes including ascorbate peroxidase, catalase, and superoxide dismutase was increased compared to control. The treated fruits with arginine 400 µM showed the highest enzymatic activity during cold storage. The percentage of chilling injury and fresh weight loss in treated fruits has decreased comparing control fruits. According to the results lowest amount of pH observed in fruits treated with arginine 400 µM. Arginine increased the amount of titratable acid, soluble solids, and vitamin C, as well the firmness of fruits. As short, arginine preharvest treatment at 400 µM concentration improved the postharvest quality of sweet cherry fruits.
摘要甜樱桃果实的品质在收获后迅速下降，有时由于转运和上市的时间需要，不能很好地到达消费者手中。因此，使用化学化合物是必不可少的，以增加耐用性和保持其质量。本研究旨在探讨精氨酸对甜樱桃果实采后品质的影响。对甜樱桃果实(Prunus avium L. cv TakDanehe Mashhad)在收获前1个月喷洒精氨酸(0,200和400 μM)。根据可接受的颜色标准，在商业成熟阶段收获水果。收获后，将果实转移到实验室，立即在温度为1℃、相对湿度为90-95% (RH)的冷库中保存20天。结果表明，处理后的果实电解质泄漏、活性氧生成和脂质过氧化降低。抗氧化酶包括抗坏血酸过氧化物酶、过氧化氢酶和超氧化物歧化酶的活性比对照增加。精氨酸含量为400µM的处理果实在冷藏过程中酶活性最高。与对照果实相比，处理果实的冷害和鲜重损失百分比有所降低。结果表明，精氨酸处理的果实pH值最低，为400µM。精氨酸增加了可滴定酸、可溶性固形物和维生素C的含量，也增加了水果的硬度。总之，采前处理浓度为400µM的精氨酸改善了甜樱桃果实的采后品质。
{"title":"The Effect of Preharvest Application of Arginine on the Postharvest Quality of Sweet Cherry Fruits during Storage","authors":"Z. Pakkish, Soheila Mohammadrezakhani","doi":"10.1080/15538362.2022.2134272","DOIUrl":"https://doi.org/10.1080/15538362.2022.2134272","url":null,"abstract":"ABSTRACT The quality of sweet cherry fruits decrease rapidly after harvest and in some cases does not reach the consumers properly due to the time require for transferring and market. Therefore, using chemical compounds is essential to increase durability and maintain its quality. This study was conducted to investigate the effects of arginine on postharvest quality of sweet cherry fruits. The sweet cherry fruits (Prunus avium L. cv TakDanehe Mashhad) were sprayed with arginine (0, 200, and 400 μM) one month before harvest. Fruits were harvested at commercial maturity stage according to acceptable color standards. After harvest, the fruits were transferred to the laboratory and immediately kept in cold storage with temperature of 1°C with 90–95% relative humidity (RH) for 20 days. The results showed that in treated fruits, electrolyte leakage, active oxygen production, and lipid peroxidation were decreased. The activity of antioxidant enzymes including ascorbate peroxidase, catalase, and superoxide dismutase was increased compared to control. The treated fruits with arginine 400 µM showed the highest enzymatic activity during cold storage. The percentage of chilling injury and fresh weight loss in treated fruits has decreased comparing control fruits. According to the results lowest amount of pH observed in fruits treated with arginine 400 µM. Arginine increased the amount of titratable acid, soluble solids, and vitamin C, as well the firmness of fruits. As short, arginine preharvest treatment at 400 µM concentration improved the postharvest quality of sweet cherry fruits.","PeriodicalId":14014,"journal":{"name":"International Journal of Fruit Science","volume":"21 1","pages":"837 - 851"},"PeriodicalIF":2.4,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75267205","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 : 2022-10-26DOI: 10.1080/15538362.2022.2138684
Indraraj Ghasil, N. Meena, P. Bhatnagar, Hanuman Singh, Ashok Kumar, S. K. Jain, M. Bhateshwar
ABSTRACT An experiment was conducted to find out the effects of various postharvest treatments on the biochemical and bioactive compounds of custard apple cv. Balanagar fruits. In the present experiment, three chemicals viz. oxalic acid (OA) (2.5 mM, 5.0 mM, 7.5 mM, and 10 mM; salicylic acid (SA) (0.5 mM, 1.0 mM, 1.5 mM, and 2.0 mM) and Sodium Nitro Prusside (SNP) at 0.5 mM, 1.0 mM, 1.5 mM, and 2.0 mM along with control were applied. Fruits were stored at ambient condition (Temp. 25 ± 2°C and relative humidity (RH) 44 ± 2%). Results indicated that fruits treated with SNP (2.0 mM) had significantly (p≤ 0.05) higher total soluble solids (30.80°B), titratable acidity (TA) (0.33%) and retained higher total sugar content (TS) (25.09%) at the end of the 9th day of storage. At the end of storage, the least reduction in total phenol content (TPC) (492.52 mg gallic acid equivalent (GAE)/100 g (11.62%) was found in SNP (2.0 mM) treated fruits. Likewise, SNP (2.0 mM) significantly (p≤ 0.05) retained higher ascorbic acid (AA) (43.20 mg/100 g), antioxidant activity (AOX) (0.92 µmol Trolox Equivalent (TE)/g), total flavonoids (TF) (71.49 µg CE/100 g) and tannin content (TC) (1.28 mg/g) compared to control during 9 days of storage. Thus, in the present investigation, SNP treatment was most suited to preserve the nutritional quality and bioactive compounds.
摘要本试验旨在研究采后不同处理对蛋奶苹果果实生化及生物活性物质的影响。Balanagar水果。在本实验中，草酸(OA) (2.5 mM, 5.0 mM, 7.5 mM, 10 mM)三种化学物质;水杨酸(SA) (0.5 mM, 1.0 mM, 1.5 mM和2.0 mM)和硝基普鲁士钠(SNP) (0.5 mM, 1.0 mM, 1.5 mM和2.0 mM)与对照一起使用。果实在常温(温度25±2℃，相对湿度44±2%)条件下贮藏。结果表明，SNP (2.0 mM)处理的果实在贮藏第9 d时，总可溶性固形物(30.80°B)、可滴定酸度(TA)(0.33%)和总糖含量(TS)(25.09%)显著提高(p≤0.05)。在贮藏结束时，SNP (2.0 mM)处理的果实总酚含量(TPC)下降幅度最小，为492.52 mg没食子酸当量(GAE)/100 g(11.62%)。在9 d的贮藏期内，SNP (2.0 mM)的抗坏血酸(AA) (43.20 mg/100 g)、抗氧化活性(AOX)(0.92µmol Trolox Equivalent (TE)/g)、总黄酮(TF)(71.49µg CE/100 g)和单宁含量(TC) (1.28 mg/g)均显著高于对照(p≤0.05)。因此，在本研究中，SNP处理最适合保存营养品质和生物活性化合物。
{"title":"Effect of Postharvest Treatments on Biochemical and Bioactive Compounds of Custard Apple (Annona Squamosa L.) Cv. Balanagar","authors":"Indraraj Ghasil, N. Meena, P. Bhatnagar, Hanuman Singh, Ashok Kumar, S. K. Jain, M. Bhateshwar","doi":"10.1080/15538362.2022.2138684","DOIUrl":"https://doi.org/10.1080/15538362.2022.2138684","url":null,"abstract":"ABSTRACT An experiment was conducted to find out the effects of various postharvest treatments on the biochemical and bioactive compounds of custard apple cv. Balanagar fruits. In the present experiment, three chemicals viz. oxalic acid (OA) (2.5 mM, 5.0 mM, 7.5 mM, and 10 mM; salicylic acid (SA) (0.5 mM, 1.0 mM, 1.5 mM, and 2.0 mM) and Sodium Nitro Prusside (SNP) at 0.5 mM, 1.0 mM, 1.5 mM, and 2.0 mM along with control were applied. Fruits were stored at ambient condition (Temp. 25 ± 2°C and relative humidity (RH) 44 ± 2%). Results indicated that fruits treated with SNP (2.0 mM) had significantly (p≤ 0.05) higher total soluble solids (30.80°B), titratable acidity (TA) (0.33%) and retained higher total sugar content (TS) (25.09%) at the end of the 9th day of storage. At the end of storage, the least reduction in total phenol content (TPC) (492.52 mg gallic acid equivalent (GAE)/100 g (11.62%) was found in SNP (2.0 mM) treated fruits. Likewise, SNP (2.0 mM) significantly (p≤ 0.05) retained higher ascorbic acid (AA) (43.20 mg/100 g), antioxidant activity (AOX) (0.92 µmol Trolox Equivalent (TE)/g), total flavonoids (TF) (71.49 µg CE/100 g) and tannin content (TC) (1.28 mg/g) compared to control during 9 days of storage. Thus, in the present investigation, SNP treatment was most suited to preserve the nutritional quality and bioactive compounds.","PeriodicalId":14014,"journal":{"name":"International Journal of Fruit Science","volume":"9 1","pages":"826 - 836"},"PeriodicalIF":2.4,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76132616","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 : 2022-10-20DOI: 10.1080/15538362.2022.2134959
X. Jiao, Bing Deng, Lixin Zhang, Zhenfeng Gao, Z. Feng, Rufu Wang
ABSTRACT The objective of this study was to identify the effects of 100 μM melatonin (MT), 1 μL/L 1-methylcyclopropene (1-MCP), and their combination treatments on the postharvest characteristics, nutritional quality, and antioxidant capacity of ‘Youhou’ persimmons during cold storage at 0°C. Compared with the control fruit, all three treatments suppressed ethylene production and respiration rate, leading to delayed softening, reduced peel discoloration, and soluble solid content loss. These treatments increased plasma membrane stability by inhibiting lipoxygenase activity and decreasing H2O2, electrolyte leakage, and malondialdehyde concentrations, resulting in higher tolerance to chilling injury (CI). At the end of storage, the CI index of fruit treated with MT, 1-MCP, and MT+1-MCP respectively exhibited 54.67%, 14.57%, and 5.54%, which were significantly lower than the control ones (78.36%). In addition, the phenolics, flavonoids, and ascorbic acid contents were also improved by the above treatments, which contributed to higher antioxidant activity than the control fruit at the late stage of storage. The combination of MT and 1-MCP treatment was more effective in improving the postharvest quality and preserving high antioxidant ability levels than either treatment alone, indicating a promising measure to preserve sweet persimmons up to 70 d.
{"title":"Melatonin and 1-Methylcyclopropene Improve the Postharvest Quality and Antioxidant Capacity of ‘Youhou’ Sweet Persimmons during Cold Storage","authors":"X. Jiao, Bing Deng, Lixin Zhang, Zhenfeng Gao, Z. Feng, Rufu Wang","doi":"10.1080/15538362.2022.2134959","DOIUrl":"https://doi.org/10.1080/15538362.2022.2134959","url":null,"abstract":"ABSTRACT The objective of this study was to identify the effects of 100 μM melatonin (MT), 1 μL/L 1-methylcyclopropene (1-MCP), and their combination treatments on the postharvest characteristics, nutritional quality, and antioxidant capacity of ‘Youhou’ persimmons during cold storage at 0°C. Compared with the control fruit, all three treatments suppressed ethylene production and respiration rate, leading to delayed softening, reduced peel discoloration, and soluble solid content loss. These treatments increased plasma membrane stability by inhibiting lipoxygenase activity and decreasing H2O2, electrolyte leakage, and malondialdehyde concentrations, resulting in higher tolerance to chilling injury (CI). At the end of storage, the CI index of fruit treated with MT, 1-MCP, and MT+1-MCP respectively exhibited 54.67%, 14.57%, and 5.54%, which were significantly lower than the control ones (78.36%). In addition, the phenolics, flavonoids, and ascorbic acid contents were also improved by the above treatments, which contributed to higher antioxidant activity than the control fruit at the late stage of storage. The combination of MT and 1-MCP treatment was more effective in improving the postharvest quality and preserving high antioxidant ability levels than either treatment alone, indicating a promising measure to preserve sweet persimmons up to 70 d.","PeriodicalId":14014,"journal":{"name":"International Journal of Fruit Science","volume":"263 1","pages":"809 - 825"},"PeriodicalIF":2.4,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77176269","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 : 2022-10-08DOI: 10.1080/15538362.2022.2129549
Nigus Gurmis, Tsegaye Melese
ABSTRACT Market participation by smallholder farmers is crucial for livelihood improvement in developing countries. Even though it is the source of currency, the fruit market has not been given attention. Therefore, this study intended to identify factors influencing avocado producers’ market participation decisions and volume of market participation in the Kaffa zone, Ethiopia. Gimbo and Chena districts were selected purposefully with a multi-stage sampling method on the bases of production potential. Data for this study were collected from 384 households from six representative Kebeles with the Cochran formula. Both primary and secondary data were employed. Primary data was collected using a semi-structured questionnaire. Both descriptive statistics and the double hurdle econometric model were employed for analysis. The descriptive statistics showed that out of 384 households (236 participants and 148 were non-participants), 89.19% were male avocado market participants and 76.69% were male avocado non-market participants. The econometric model results confirmed that market participation decisions (hurdle 1) of producers were significantly influenced by sex, market experience, education level, and family size. The intensity of avocado market participation (hurdle 2) is significantly affected by the market experience, access to credit services, extension contact, family size, and off-farm income. Understanding the factors of both avocado market participation decisions and level of participation helps policymakers to re-adjust their policies both at the regional and federal government levels. Then, this study recommends that governments need to exploit more effort into market-oriented production to enhance the productivity of avocados. Credit providers also must strengthen. Additionally, modern production technologies must be taken into consideration to increase the avocado quantity produced.
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