Pub Date : 2018-10-19DOI: 10.5073/JABFQ.2018.091.033
J. Farias, S. T. Nunes, D. Sausen, M. Nunes, F. A. Neis, Leonardo C. Garlet, P. A. Nunes, V. Dressler, M. Schetinger, L. Rossato, E. Girotto, G. Brunetto, F. Nicoloso
Areas with a history of cupric fungicide application accumulate copper (Cu), which may be toxic to plants and might result in food chain contamination. This work aimed to study the effects of Cu contaminated vineyard soils (2.2, 5, 36.3, 67, 95.7, 270.5 and 320.70 mg Cu kg-1 soil) on potato physiology and it´s potential risk to human health, during the fall and spring growing seasons. The increase of Cu concentration in leaves was dependent on external Cu concentrations and development stage of the leaves. There were genotypic differences for both growth and biochemical parameters including high accumulation of Cu in tubers among the genotypes. Therefore, Cu stress triggered a defense mechanism against oxidative stress in potato plants; and the magnitude of Cu stress was depended on the genotype and the plant physiological status. In addition, these results provide evidence that potato antioxidants are not sufficient to prevent biological damage caused by Cu toxicity, and that popato cultivation in areas with high Cu levels is not recommended due to low production and potential risk to human health.
有使用铜杀菌剂历史的地区会积累铜，这可能对植物有毒，并可能导致食物链污染。本工作旨在研究秋季和春季生长季节，受Cu污染的葡萄园土壤（2.2、5、36.3、67、95.7、270.5和320.70 mg Cu kg-1土壤）对马铃薯生理学的影响及其对人类健康的潜在风险。叶片中Cu浓度的增加与外部Cu浓度和叶片发育阶段有关。在生长和生化参数方面存在基因型差异，包括不同基因型之间块茎中铜的高积累。因此，铜胁迫触发了马铃薯植物对氧化应激的防御机制；Cu胁迫的大小取决于基因型和植物的生理状况。此外，这些结果提供了证据，证明土豆抗氧化剂不足以防止铜毒性引起的生物损伤，并且由于产量低和对人类健康的潜在风险，不建议在铜含量高的地区种植波波头。
{"title":"Agricultural contamination: Effect of copper excess on physiological parameters of potato genotypes and food chain security","authors":"J. Farias, S. T. Nunes, D. Sausen, M. Nunes, F. A. Neis, Leonardo C. Garlet, P. A. Nunes, V. Dressler, M. Schetinger, L. Rossato, E. Girotto, G. Brunetto, F. Nicoloso","doi":"10.5073/JABFQ.2018.091.033","DOIUrl":"https://doi.org/10.5073/JABFQ.2018.091.033","url":null,"abstract":"Areas with a history of cupric fungicide application accumulate copper (Cu), which may be toxic to plants and might result in food chain contamination. This work aimed to study the effects of Cu contaminated vineyard soils (2.2, 5, 36.3, 67, 95.7, 270.5 and 320.70 mg Cu kg-1 soil) on potato physiology and it´s potential risk to human health, during the fall and spring growing seasons. The increase of Cu concentration in leaves was dependent on external Cu concentrations and development stage of the leaves. There were genotypic differences for both growth and biochemical parameters including high accumulation of Cu in tubers among the genotypes. Therefore, Cu stress triggered a defense mechanism against oxidative stress in potato plants; and the magnitude of Cu stress was depended on the genotype and the plant physiological status. In addition, these results provide evidence that potato antioxidants are not sufficient to prevent biological damage caused by Cu toxicity, and that popato cultivation in areas with high Cu levels is not recommended due to low production and potential risk to human health.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49487308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-17DOI: 10.5073/JABFQ.2018.091.031
N. Meitinger, W. Kreis
A quick assay to determine the total glucosinolate content of fresh horseradish roots in less than 10 minutes is described. The method involves the following steps: 1. Maceration of horseradish root with 4% phosphoric acid to avoid enzymatic degradation of endogenous glucosinolates, 2. neutralization of the extract and determination of free glucose using a commercial blood glucose meter, 3. enzymatic hydrolysis of the glucosinolates by exogenous myrosinase, 4. detection of released glucose, again using a blood glucose meter, and 5. calculation of the glucosinolate content on the basis of the difference between the two glucose values determined. The newly developed assay (‘ITC quick test’) was compared with a standard high-performance liquid chromatographic method for glucosinolate analysis.
{"title":"Development and validation of a quick assay for the total glucosinolate content in horseradish (Armoracia rusticana) using glucose strips and a blood glucose meter.","authors":"N. Meitinger, W. Kreis","doi":"10.5073/JABFQ.2018.091.031","DOIUrl":"https://doi.org/10.5073/JABFQ.2018.091.031","url":null,"abstract":"A quick assay to determine the total glucosinolate content of fresh horseradish roots in less than 10 minutes is described. The method involves the following steps: 1. Maceration of horseradish root with 4% phosphoric acid to avoid enzymatic degradation of endogenous glucosinolates, 2. neutralization of the extract and determination of free glucose using a commercial blood glucose meter, 3. enzymatic hydrolysis of the glucosinolates by exogenous myrosinase, 4. detection of released glucose, again using a blood glucose meter, and 5. calculation of the glucosinolate content on the basis of the difference between the two glucose values determined. The newly developed assay (‘ITC quick test’) was compared with a standard high-performance liquid chromatographic method for glucosinolate analysis.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42637864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-17DOI: 10.5073/JABFQ.2018.091.032
Chemeda Abedeta Garbaba, Lemlem Gurmu Denboba, E. Mendesil, F. L. Ocho, O. Hensel
Maize plays a key role in household food security in Ethiopia, but its benefit has been limited with high post-harvest losses. This study was initiated to assess post-harvest practices and associated fungi pathogen epidemiology along the maize supply chain in southwestern Ethiopia. The study was conducted in five purposively selected districts and a three-stage sampling procedure was employed for selection of the target groups. In total, 342 participants from different actors were interviewed using a semi-structured questionnaire. Maize samples were collected every month from 63 randomly selected actors for mycological analysis during six months storage period. Post-harvest loss was estimated to be 31% and loss during storage was identified as a critical loss point. Comparing all biological agents, loss due to fungal pathogens in the store ranked on top. Moisture content at loading stage could not increase the shelf life of the commodity. Germination tests showed a significant (P < 0.01) decrease as storage duration increased, while mould incidence on cobs and kernels significantly (P < 0.05) increased. In total, seven fungal genera were isolated, characterized and identified, with Fusarium, Penicillium and Aspergillus being predominant. Most of the post-harvest practices are not effective in reducing post-harvest losses. Especially, farmers’ traditional storage structures can be influenced by external climatic conditions and make the grains liable to develop mould during the rainy season. This research, therefore, highlights the need to design, develop or modify existing storage technologies that reduce post-harvest loss due to mycotoxin-producing fungal pathogens. Furthermore, post-harvest drying to obtain optimum moisture content is also crucial to reduce losses.
{"title":"Actors’ post-harvest maize handling practices and allied mycoflora epidemiology in southwestern Ethiopia: Potential for mycotoxin-producing fungi management","authors":"Chemeda Abedeta Garbaba, Lemlem Gurmu Denboba, E. Mendesil, F. L. Ocho, O. Hensel","doi":"10.5073/JABFQ.2018.091.032","DOIUrl":"https://doi.org/10.5073/JABFQ.2018.091.032","url":null,"abstract":"Maize plays a key role in household food security in Ethiopia, but its benefit has been limited with high post-harvest losses. This study was initiated to assess post-harvest practices and associated fungi pathogen epidemiology along the maize supply chain in southwestern Ethiopia. The study was conducted in five purposively selected districts and a three-stage sampling procedure was employed for selection of the target groups. In total, 342 participants from different actors were interviewed using a semi-structured questionnaire. Maize samples were collected every month from 63 randomly selected actors for mycological analysis during six months storage period. Post-harvest loss was estimated to be 31% and loss during storage was identified as a critical loss point. Comparing all biological agents, loss due to fungal pathogens in the store ranked on top. Moisture content at loading stage could not increase the shelf life of the commodity. Germination tests showed a significant (P < 0.01) decrease as storage duration increased, while mould incidence on cobs and kernels significantly (P < 0.05) increased. In total, seven fungal genera were isolated, characterized and identified, with Fusarium, Penicillium and Aspergillus being predominant. Most of the post-harvest practices are not effective in reducing post-harvest losses. Especially, farmers’ traditional storage structures can be influenced by external climatic conditions and make the grains liable to develop mould during the rainy season. This research, therefore, highlights the need to design, develop or modify existing storage technologies that reduce post-harvest loss due to mycotoxin-producing fungal pathogens. Furthermore, post-harvest drying to obtain optimum moisture content is also crucial to reduce losses.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42722681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-12DOI: 10.5073/JABFQ.2018.091.030
M. Asghari, Rana Rezaei-Rad
Enhancing the nutritional quality of fruits using safe and environmental friendly methods has become of the most important targets in modern fruit production systems. Brassinosteroids, a new group of phytohormones with positive roles on human health, have been shown to modulate a wide range of plant activities and enhance fruit quality in some crops. This study was conducted to examine the effect of 24-Epibrassinolide (EBL), a synthetic brassinosteroid, on quality attributes and some active bio-compounds of “Thompson seedless” table grapes. Grape vines and bunches were sprayed with EBL (at 0, 3 and/or 6 µmol L-1) at three different stages (4 weeks after fool bloom, veraison stage and 1 day before harvest). As a novel finding in seedless grapes, exogenous EBL substantially enhanced soluble solids content, total organic acids, antioxidants, phenolics and ascorbic acid levels in treated berries. Also the activity of catalase and polyphenol oxidase enzymes was increased. There was no significant difference between the two brassinosteroid levels in most cases. EBL showed a good potential for enhancing table grape phytonutrients, nutritional quality and phytochemical contents and is introduced as a safe compound to be used in table grape production programs.
{"title":"24-epibrassinolide enhanced the quality parameters and phytochemical contents of table grape.","authors":"M. Asghari, Rana Rezaei-Rad","doi":"10.5073/JABFQ.2018.091.030","DOIUrl":"https://doi.org/10.5073/JABFQ.2018.091.030","url":null,"abstract":"Enhancing the nutritional quality of fruits using safe and environmental friendly methods has become of the most important targets in modern fruit production systems. Brassinosteroids, a new group of phytohormones with positive roles on human health, have been shown to modulate a wide range of plant activities and enhance fruit quality in some crops. This study was conducted to examine the effect of 24-Epibrassinolide (EBL), a synthetic brassinosteroid, on quality attributes and some active bio-compounds of “Thompson seedless” table grapes. Grape vines and bunches were sprayed with EBL (at 0, 3 and/or 6 µmol L-1) at three different stages (4 weeks after fool bloom, veraison stage and 1 day before harvest). As a novel finding in seedless grapes, exogenous EBL substantially enhanced soluble solids content, total organic acids, antioxidants, phenolics and ascorbic acid levels in treated berries. Also the activity of catalase and polyphenol oxidase enzymes was increased. There was no significant difference between the two brassinosteroid levels in most cases. EBL showed a good potential for enhancing table grape phytonutrients, nutritional quality and phytochemical contents and is introduced as a safe compound to be used in table grape production programs.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49290094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-04DOI: 10.5073/JABFQ.2018.091.029
P. Mabapa, K. Ayisi, I. Mariga
The study on Moringa oleifera was conducted over twelve months during 2014-2015 to evaluate the impact of the growing season and varying planting densities on biomass yield and physiological at-tributes under dryland conditions. Trial was established at densities of 5000, 2500, 1667 and 1250 plants ha-1, with eight replicates. The increase in planting density led to an increase in biomass production. The monthly and seasonal data collected showed significant differences in net photosynthetic rate, transpiration, sub-stomatal CO2 and stomatal conductance. However, planting densities of M. oleifera had no significant effect on all the gaseous exchange parameters measured. The results further revealed that the amount of carbon dioxide assimilated by the tree is not attributable to photosynthetic and transpiration rates as well as stomatal conductance. Under water shortage condition and high temperature, M. oleifera used an adaptation strategy by reducing stomatal conductance and transpiration and hence increasing water use efficiency. Moringa oleifera thus has the ability to sequester carbon even under water stress conditions. The tree can therefore be recommended for planting at a relatively high density of 5000 plants ha-1 in many parts of Limpopo province where temperatures are favorable for improved farmers’ livelihoods as well as for climate change mitigation.
{"title":"Seasonal effect on Moringa oleifera gaseous exchange and water use efficiency under diverse planting densities","authors":"P. Mabapa, K. Ayisi, I. Mariga","doi":"10.5073/JABFQ.2018.091.029","DOIUrl":"https://doi.org/10.5073/JABFQ.2018.091.029","url":null,"abstract":"The study on Moringa oleifera was conducted over twelve months during 2014-2015 to evaluate the impact of the growing season and varying planting densities on biomass yield and physiological at-tributes under dryland conditions. Trial was established at densities of 5000, 2500, 1667 and 1250 plants ha-1, with eight replicates. The increase in planting density led to an increase in biomass production. The monthly and seasonal data collected showed significant differences in net photosynthetic rate, transpiration, sub-stomatal CO2 and stomatal conductance. However, planting densities of M. oleifera had no significant effect on all the gaseous exchange parameters measured. The results further revealed that the amount of carbon dioxide assimilated by the tree is not attributable to photosynthetic and transpiration rates as well as stomatal conductance. Under water shortage condition and high temperature, M. oleifera used an adaptation strategy by reducing stomatal conductance and transpiration and hence increasing water use efficiency. Moringa oleifera thus has the ability to sequester carbon even under water stress conditions. The tree can therefore be recommended for planting at a relatively high density of 5000 plants ha-1 in many parts of Limpopo province where temperatures are favorable for improved farmers’ livelihoods as well as for climate change mitigation.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45815663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-31DOI: 10.5073/10.5073/JABFQ.2018.091.028
M. Ramírez-Ramos, K. Medina-Dzul, R. García-Mateos, J. Corrales-García, C. Ybarra-Moncada, A. Castillo-González
In Mexico, there are 50 recorded varieties of the prickly pear fruit. National production covers only the white-pulp fruit, but other red varieties have export potential; however, their nutraceutical properties are unknown. The pulp and peel (underutilized tissue) of the pigmented fruits of the genus Opuntia sp. are marketed on a limited basis. They represent an alternative source of stable pigments (betalains), which are associated with antioxidant properties, for the agroindustry. The objective was to assess the content of nutraceutical components, antioxidant activity, and peel and pulp color of 11 varieties of the prickly pear fruit that are marketed on a small scale. Statistical analysis revealed that Roja Villanueva peel had the highest betalain content (39.97 mg 100 g-1 FW). Altena Blanca peel demonstrated the highest concentration of phenolic compounds (618.39 mg GAE 100 g-1 FW), whereas Altena Roja had the highest ascorbic acid content (37.14 mg AAE 100 g-1 FW). The greatest nutraceutical potential was observed in the pulp of the non-marketed Tzaponopal Rojo variety of the species O. robusta var. larreyi, due to the high antioxidant activity (0.0183 mg mL-1), as well as the darkest color (‹ hue value, 12.31) and the lowest lightness (‹ luminosity, 19.31), which coincides with the highest betalain concentration.
{"title":"Nutraceutical components, antioxidant activity and color of eleven varieties of prickly pear ( Opuntia sp.)","authors":"M. Ramírez-Ramos, K. Medina-Dzul, R. García-Mateos, J. Corrales-García, C. Ybarra-Moncada, A. Castillo-González","doi":"10.5073/10.5073/JABFQ.2018.091.028","DOIUrl":"https://doi.org/10.5073/10.5073/JABFQ.2018.091.028","url":null,"abstract":"In Mexico, there are 50 recorded varieties of the prickly pear fruit. National production covers only the white-pulp fruit, but other red varieties have export potential; however, their nutraceutical properties are unknown. The pulp and peel (underutilized tissue) of the pigmented fruits of the genus Opuntia sp. are marketed on a limited basis. They represent an alternative source of stable pigments (betalains), which are associated with antioxidant properties, for the agroindustry. The objective was to assess the content of nutraceutical components, antioxidant activity, and peel and pulp color of 11 varieties of the prickly pear fruit that are marketed on a small scale. Statistical analysis revealed that Roja Villanueva peel had the highest betalain content (39.97 mg 100 g-1 FW). Altena Blanca peel demonstrated the highest concentration of phenolic compounds (618.39 mg GAE 100 g-1 FW), whereas Altena Roja had the highest ascorbic acid content (37.14 mg AAE 100 g-1 FW). The greatest nutraceutical potential was observed in the pulp of the non-marketed Tzaponopal Rojo variety of the species O. robusta var. larreyi, due to the high antioxidant activity (0.0183 mg mL-1), as well as the darkest color (‹ hue value, 12.31) and the lowest lightness (‹ luminosity, 19.31), which coincides with the highest betalain concentration.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45992795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-21DOI: 10.5073/JABFQ.2018.091.027
Naida Juárez-Trujillo, J. Monribot-Villanueva, V. Jiménez-Fernández, Rosaelena Suárez-Montaño, Á. S. Aguilar-Colorado, J. Guerrero-Analco, M. Jiménez
Flowers of the Izote (Yucca elephantipes) are traditionally consumed in different dishes in the Mexican cuisine. Although the use of the flowers in Salvador, Guatemala and Mexico is quite popular, there are no scientific reports of their physicochemical properties and phytochemical composition of petals, carpels and stamens. As part of our research program on characterization of edible wild plants, we have analysed the composition and content of phenolic com-pounds in methanol crude extracts of petals, carpels and stamens from Y. elephantipes. The petals exhibited eighteen phenolic compounds, including 4-coumaric acid, rutin, ferulic acid, 4-hydroxybenzoic acid, caffeic acid, quercetin 3-glucoside, trans-cinnamic acid, among others. The principal phenolic compound found in petals, carpels and stamens was 4-coumaric acid, with 1154.20, 526.19 and 484.50 μg/g, respectively. In addition, carpel and petals were found to be rich in fatty acids, including linoleic, oleic, and palmitic acid. The petals also contained the highest amount of total dietary fiber. Based on these results, the flowers of Y. elephantipes appear to be a good source of phenolic compounds. This information may be useful in identifying these types of flowers and contribute in future research related to their use in the food area.
{"title":"Phytochemical characterization of Izote (Yucca elephantipes) flowers","authors":"Naida Juárez-Trujillo, J. Monribot-Villanueva, V. Jiménez-Fernández, Rosaelena Suárez-Montaño, Á. S. Aguilar-Colorado, J. Guerrero-Analco, M. Jiménez","doi":"10.5073/JABFQ.2018.091.027","DOIUrl":"https://doi.org/10.5073/JABFQ.2018.091.027","url":null,"abstract":"Flowers of the Izote (Yucca elephantipes) are traditionally consumed in different dishes in the Mexican cuisine. Although the use of the flowers in Salvador, Guatemala and Mexico is quite popular, there are no scientific reports of their physicochemical properties and phytochemical composition of petals, carpels and stamens. As part of our research program on characterization of edible wild plants, we have analysed the composition and content of phenolic com-pounds in methanol crude extracts of petals, carpels and stamens from Y. elephantipes. The petals exhibited eighteen phenolic compounds, including 4-coumaric acid, rutin, ferulic acid, 4-hydroxybenzoic acid, caffeic acid, quercetin 3-glucoside, trans-cinnamic acid, among others. The principal phenolic compound found in petals, carpels and stamens was 4-coumaric acid, with 1154.20, 526.19 and 484.50 μg/g, respectively. In addition, carpel and petals were found to be rich in fatty acids, including linoleic, oleic, and palmitic acid. The petals also contained the highest amount of total dietary fiber. Based on these results, the flowers of Y. elephantipes appear to be a good source of phenolic compounds. This information may be useful in identifying these types of flowers and contribute in future research related to their use in the food area.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44673679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-13DOI: 10.5073/JABFQ.2018.091.026
Uzair Muhammad, T. Khattak, H. Rahman, M. Daud, W. Murad, Azizullah Azizullah
The use of synthetic pesticides to control pests and increase crops yield is a common practice, but they cause several environmental and health problems. Therefore, there is a need to explore alternative approaches to reduce the sole dependence on synthetic pesticides. The present study was conducted to screen the extracts of Neem seed and Turmeric rhizome for pesticidal activities against okra pests (aphids). Experiments were conducted in field with four plots. One plot was kept as a control (unsprayed) and one was sprayed with synthetic pesticides, one with Neem seeds extract and one with Turmeric rhizome extract. The effect on number of pests, plant growth and yield was observed at regular intervals. A significant reduction in pests was recorded in all treatments as compared to the control. Neem seed extract was more effective than Turmeric rhizome extract as revealed by a 73% decrease in aphids by Neem extract in comparison to 54% by Turmeric extract after last application. Both the extracts were found to be more effective than the synthetic pesticides in controlling okra pests. Both the extracts had stimulatory effects on okra growth and yield. For example, the total yield of plots sprayed with Neem (53.3 kg plot-1) and Turmeric extract (47.7 kg plot-1) was higher than the yield of control plot (33.8 kg plot-1) and plot sprayed with synthetic pesticides (39 kg plot-1). It is concluded that Neem and Turmeric extracts can be used as alternative of synthetic pesticides for controlling pests attacks in okra.
{"title":"Effects of Neem (Azadirachta indica) seed and Turmeric (Curcuma longa) rhizome extracts on aphids control, plant growth and yield in okra","authors":"Uzair Muhammad, T. Khattak, H. Rahman, M. Daud, W. Murad, Azizullah Azizullah","doi":"10.5073/JABFQ.2018.091.026","DOIUrl":"https://doi.org/10.5073/JABFQ.2018.091.026","url":null,"abstract":"The use of synthetic pesticides to control pests and increase crops yield is a common practice, but they cause several environmental and health problems. Therefore, there is a need to explore alternative approaches to reduce the sole dependence on synthetic pesticides. The present study was conducted to screen the extracts of Neem seed and Turmeric rhizome for pesticidal activities against okra pests (aphids). Experiments were conducted in field with four plots. One plot was kept as a control (unsprayed) and one was sprayed with synthetic pesticides, one with Neem seeds extract and one with Turmeric rhizome extract. The effect on number of pests, plant growth and yield was observed at regular intervals. A significant reduction in pests was recorded in all treatments as compared to the control. Neem seed extract was more effective than Turmeric rhizome extract as revealed by a 73% decrease in aphids by Neem extract in comparison to 54% by Turmeric extract after last application. Both the extracts were found to be more effective than the synthetic pesticides in controlling okra pests. Both the extracts had stimulatory effects on okra growth and yield. For example, the total yield of plots sprayed with Neem (53.3 kg plot-1) and Turmeric extract (47.7 kg plot-1) was higher than the yield of control plot (33.8 kg plot-1) and plot sprayed with synthetic pesticides (39 kg plot-1). It is concluded that Neem and Turmeric extracts can be used as alternative of synthetic pesticides for controlling pests attacks in okra.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49563687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-26DOI: 10.5073/10.5073/JABFQ.2018.091.025
X. Jia, J. Ye, Haibin Wang, Li Li, Fei Wang, Qi Zhang, Jiebo Chen, Xin-Yu Zheng, H. He
Free amino acid compositions in Wuyi Rock Tea leaves from Yu (authentic rock region), Guiyan (semi-authentic rock region) and Qishan (ordinary region) tea plantations were analyzed. Results showed that contents of 18 free amino acids were 1.6-2.0 times higher in Yu and Guiyan than that in Qishan. The theanine contents reached to 17-20 mg g-1 in Yu and Guiyan, while it was less than 10 mg g-1 in Qishan. Hierarchical cluster analysis and principal component analysis were effective in distinguishing Rock Tea from different regions. The ratios of theanine, sweet and umami amino acids were 8%, 5% and 6% higher, respectively in Yu than that in Qishan. Sensory evaluation score were positively correlated with the ratios of theanine, sweet and umami amino acids (P < 0.05 or P < 0.01). Our results highlight that the favourite characteristic amino acids are dominant contributors to sweet aftertaste of Rock Tea.
{"title":"Characteristic amino acids in tea leaves as quality indicator for evaluation of Wuyi Rock Tea in different cultured regions","authors":"X. Jia, J. Ye, Haibin Wang, Li Li, Fei Wang, Qi Zhang, Jiebo Chen, Xin-Yu Zheng, H. He","doi":"10.5073/10.5073/JABFQ.2018.091.025","DOIUrl":"https://doi.org/10.5073/10.5073/JABFQ.2018.091.025","url":null,"abstract":"Free amino acid compositions in Wuyi Rock Tea leaves from Yu (authentic rock region), Guiyan (semi-authentic rock region) and Qishan (ordinary region) tea plantations were analyzed. Results showed that contents of 18 free amino acids were 1.6-2.0 times higher in Yu and Guiyan than that in Qishan. The theanine contents reached to 17-20 mg g-1 in Yu and Guiyan, while it was less than 10 mg g-1 in Qishan. Hierarchical cluster analysis and principal component analysis were effective in distinguishing Rock Tea from different regions. The ratios of theanine, sweet and umami amino acids were 8%, 5% and 6% higher, respectively in Yu than that in Qishan. Sensory evaluation score were positively correlated with the ratios of theanine, sweet and umami amino acids (P < 0.05 or P < 0.01). Our results highlight that the favourite characteristic amino acids are dominant contributors to sweet aftertaste of Rock Tea.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41555019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-13DOI: 10.5073/JABFQ.2018.091.023
Yanqun Li, Dexin Kong, Hui-ling Liang, Hong-fa Wu
Light can affect the yields of alkaloid and essential oil in the synthesis of secondary metabolites directly or indirectly through plant growth. Despite Mahonia breviracema being an endemic medicinal species in China, research on the influence of light on production of alkaloid and essential oil is scarce. Thus, this research evaluated the influence of various lighting conditions on alkaloid yields and the composition and yields of the essential oils of M. breviracema. The results revealed significant differences in alkaloid yields, oil yieldsand chemical characteristics of M. breviracema grown in four different light intensities from 10 to 100% full sun shine. The total amount of alkaloids in plants under I30 and I50 was higher than that under I10 and I100 due to the higher biomass of plants. Oil yield of M. breviracema leaf increased linearly with the increase of lightincidence. Plants grown under I10 had less plastoglobuli, which coincided with the lowest oil yield (1.91 g kg-1). The plastoglobuli in chloroplasts increased when the irradiance levels increased, resulting in the highest oil yields under I100 (4.53 g kg-1). The principal components in the leaves of M. breviracema were hexadecanoic acid (10.54-72.19%) and α-ionone (1.25-42.39%). The highest hexadecanoic acid content was obtained under I50, followed by I30, and the highest α-ionone content was obtained under I100. Therefore, it is necessary to control the light environment to obtain raw materials with high quality.
光照可以通过植物生长直接或间接影响次生代谢产物合成中生物碱和精油的产量。短总状Mahonia是我国特有的药用植物，但光照对生物碱和精油生产的影响研究较少。因此，本研究评估了不同光照条件对短总状花序生物碱产量以及精油成分和产量的影响。结果表明，在10～100%的全日照条件下，短总状花序在四种不同光照强度下的生物碱产量、产油量和化学特性存在显著差异。I30和I50下的植物生物碱总量高于I10和I100下，这是由于植物的生物量较高。短总状花序的出油率随光照的增加呈线性增加。在I10下生长的植物具有较少的质体珠粒力，这与最低的油产量（1.91g kg-1）相吻合。叶绿体中的质体珠粒力随着辐照度水平的增加而增加，从而在I100（4.53 g kg-1）下产生最高的油产量。短总状分枝杆菌叶片中的主要成分为十六烷酸（10.54-72.19%）和α-紫罗兰酮（1.25-42.39%）。因此，有必要控制光环境以获得高质量的原材料。
{"title":"Alkaloid content and essential oil composition of Mahonia breviracema cultivated under different light environments","authors":"Yanqun Li, Dexin Kong, Hui-ling Liang, Hong-fa Wu","doi":"10.5073/JABFQ.2018.091.023","DOIUrl":"https://doi.org/10.5073/JABFQ.2018.091.023","url":null,"abstract":"Light can affect the yields of alkaloid and essential oil in the synthesis of secondary metabolites directly or indirectly through plant growth. Despite Mahonia breviracema being an endemic medicinal species in China, research on the influence of light on production of alkaloid and essential oil is scarce. Thus, this research evaluated the influence of various lighting conditions on alkaloid yields and the composition and yields of the essential oils of M. breviracema. The results revealed significant differences in alkaloid yields, oil yieldsand chemical characteristics of M. breviracema grown in four different light intensities from 10 to 100% full sun shine. The total amount of alkaloids in plants under I30 and I50 was higher than that under I10 and I100 due to the higher biomass of plants. Oil yield of M. breviracema leaf increased linearly with the increase of lightincidence. Plants grown under I10 had less plastoglobuli, which coincided with the lowest oil yield (1.91 g kg-1). The plastoglobuli in chloroplasts increased when the irradiance levels increased, resulting in the highest oil yields under I100 (4.53 g kg-1). The principal components in the leaves of M. breviracema were hexadecanoic acid (10.54-72.19%) and α-ionone (1.25-42.39%). The highest hexadecanoic acid content was obtained under I50, followed by I30, and the highest α-ionone content was obtained under I100. Therefore, it is necessary to control the light environment to obtain raw materials with high quality.","PeriodicalId":56276,"journal":{"name":"Journal of Applied Botany and Food Quality-Angewandte Botanik","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2018-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49023744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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