Dried red chilies are widely used globally and are susceptible to contamination by fungi and fungal toxins.Roasting is a common way of processing dried red chilies.This study explored the effects of Aspergillus niger ...Dried red chilies are widely used globally and are susceptible to contamination by fungi and fungal toxins.Roasting is a common way of processing dried red chilies.This study explored the effects of Aspergillus niger and ochratoxin A(OTA)contamination on the quality of roasted chilies,and the fate of OTA during the roasting process.Three optimum roasting conditions(140°C×8 min,160°C×6 min,and 180°C×4 min)were screened out by a combination of instrumental and manual sensory evaluations.Under these roasting conditions,A.niger and OTA contamination diminished the quality and taste of roasted chilies.With increasing roasting temperature and time duration,OTA content and mold counts gradually decreased,together with the DNA degradation of OTA biosynthesis-related genes of A.niger in roasted chilies.The roasting condition at 180°C×4 min showed the greatest decomposition effect on OTA,while also maintaining good sensory quality of roasted chilies.This study shed light on the fate of OTA during the chili roasting process.展开更多
Mycotoxins exist widely in food and have a serious impact on human health.At present,most detection methods of mycotoxins are costly and time-consuming.Most of these methods are aimed at detecting a single type of myc...Mycotoxins exist widely in food and have a serious impact on human health.At present,most detection methods of mycotoxins are costly and time-consuming.Most of these methods are aimed at detecting a single type of mycotoxin,and the efficiency is not high.On this basis,in this study,QuEChERS-deep eutectic solvent liquid-liquid microextraction was applied to extract and enrich 14 mycotoxins in chili peppers from the concept of green chemistry.A simple,time-consuming and environment-friendly multi-flux pretreatment method was established,and 100 chili pepper samples were randomly sampled from farmers'markets and supermarkets in major urban areas of Guizhou Province for detection,and risk assessment was carried out according to the detection results.展开更多
[Objective]The aim was to investigate inheritance of the mutagenic properties caused by ion implantation from F1 to F2 generation in chili pepper.[Method]Chili pepper seeds were implanted with different ion combinatio...[Objective]The aim was to investigate inheritance of the mutagenic properties caused by ion implantation from F1 to F2 generation in chili pepper.[Method]Chili pepper seeds were implanted with different ion combinations at different doses,and the F1 generation seeds of five groups in which biological mutation occurred were selected to sow in the field.Then the main phenotype changes in F2 generation were observed,the biochemical changes caused by ion implantation were analyzed by determination of peroxidase isozyme.[Result]Seed implanted with 9×1011 P2＋/cm2 and 1×1012 Cu2＋/cm2（No.21）on its both sides could maintain the superiority in yield per plant to F2 generation,while the mutagenic effects of F1 generation in other groups were not inherited by the F2 generation.[Conclusion]The prominent biological characters induced in the seeds of group No.21 were relatively inherited,so the seeds were worth further breeding.展开更多
基金supported by the National Natural Science Foundation of China(No.32160607)the Basic Scientific Research Program from Guizhou Science and Technology Agency(Qian Ke He Ji Chu-ZK[2021]176)Gui Da Pei Yu(2019)40,China.
文摘Dried red chilies are widely used globally and are susceptible to contamination by fungi and fungal toxins.Roasting is a common way of processing dried red chilies.This study explored the effects of Aspergillus niger and ochratoxin A(OTA)contamination on the quality of roasted chilies,and the fate of OTA during the roasting process.Three optimum roasting conditions(140°C×8 min,160°C×6 min,and 180°C×4 min)were screened out by a combination of instrumental and manual sensory evaluations.Under these roasting conditions,A.niger and OTA contamination diminished the quality and taste of roasted chilies.With increasing roasting temperature and time duration,OTA content and mold counts gradually decreased,together with the DNA degradation of OTA biosynthesis-related genes of A.niger in roasted chilies.The roasting condition at 180°C×4 min showed the greatest decomposition effect on OTA,while also maintaining good sensory quality of roasted chilies.This study shed light on the fate of OTA during the chili roasting process.
基金Supported by the Science and Technology Planning Project of Guizhou Province(QKHZC[2020]1Y167).
文摘Mycotoxins exist widely in food and have a serious impact on human health.At present,most detection methods of mycotoxins are costly and time-consuming.Most of these methods are aimed at detecting a single type of mycotoxin,and the efficiency is not high.On this basis,in this study,QuEChERS-deep eutectic solvent liquid-liquid microextraction was applied to extract and enrich 14 mycotoxins in chili peppers from the concept of green chemistry.A simple,time-consuming and environment-friendly multi-flux pretreatment method was established,and 100 chili pepper samples were randomly sampled from farmers'markets and supermarkets in major urban areas of Guizhou Province for detection,and risk assessment was carried out according to the detection results.
基金Supported by"Study on Biological Effects of Mutagenesis of Seedsof Oil Crops,Purple Peanut and Sunflower(including Chili Pepper)Caused by Ion Implantation"supported by the Key Lab for Beam Technology and Material Modification of Ministry of Education(0912)~~
文摘[Objective]The aim was to investigate inheritance of the mutagenic properties caused by ion implantation from F1 to F2 generation in chili pepper.[Method]Chili pepper seeds were implanted with different ion combinations at different doses,and the F1 generation seeds of five groups in which biological mutation occurred were selected to sow in the field.Then the main phenotype changes in F2 generation were observed,the biochemical changes caused by ion implantation were analyzed by determination of peroxidase isozyme.[Result]Seed implanted with 9×1011 P2＋/cm2 and 1×1012 Cu2＋/cm2（No.21）on its both sides could maintain the superiority in yield per plant to F2 generation,while the mutagenic effects of F1 generation in other groups were not inherited by the F2 generation.[Conclusion]The prominent biological characters induced in the seeds of group No.21 were relatively inherited,so the seeds were worth further breeding.
