Structures of Degradation Products and Degradation Pathways of Aflatoxin B1 by High-Voltage Atmospheric Cold Plasma (HVACP) Treatment

降级(电信) 黄曲霉毒素 化学 等离子体 环境化学 高压 环境科学 电压 食品科学 电气工程 工程类 核物理学 电信 计算机科学 物理
作者
Hu Shi,Bruce Cooper,R. L. Stroshine,Klein E. Ileleji,Kevin M. Keener
出处
期刊:Journal of Agricultural and Food Chemistry [American Chemical Society]
卷期号:65 (30): 6222-6230 被引量:116
标识
DOI:10.1021/acs.jafc.7b01604
摘要

High-voltage atmospheric cold plasma (HVACP) is a novel nonthermal decontamination technology that has potential for use in the food industry. In this study, HVACP was applied to treat pure aflatoxin B1 (AFB1) powder on a glass slide. AFB1 was degraded by 76% using a 5 min HVACP treatment in air having 40% relative humidity. The degradation products of AFB1 were separated, and their molecular formulas were elucidated using liquid-chromatography time-of-flight mass spectrometry (HPLC–TOF-MS). Six main degradation products were observed. The structures of the degradation products were further clarified via orbitrap mass spectrometry by means of fragmentation of the parental ions. Two degradation pathways were proposed on the basis of the structure of the degradation products. Among the six degradation products, two were ozonolysis products of AFB1. The appearance of the other four degradation products indicates that AFB1 was degraded by other reactive species besides ozone that were generated during HVACP treatment. Reactive oxygen gas species are suggested as the major agents for aflatoxin degradation during HVACP treatment. Two degradation pathways of AFB1 by HVACP treatment were proposed. One pathway involves reactions in which H•, OH•, CHO• radicals are added. The other involves epoxidation by HO2• radicals and oxidation of AFB1by the combined effects of the oxidative species OH•, H2O2, and O3. According to the structure–bioactivity relationship of AFB1, the bioactivity of the AFB1 samples subjected to HVACP treatment is significantly reduced because of the disappearance of the C8═C9 double bond in the furofuran ring in all of the major degradation products as well as the modification of the lactone ring, cyclopentanone, and the methoxyl group.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
syhjxk发布了新的文献求助10
1秒前
彭于彦祖应助REBACK采纳,获得30
1秒前
bronny发布了新的文献求助10
2秒前
2秒前
3秒前
sx发布了新的文献求助10
3秒前
3秒前
3秒前
飞飞发布了新的文献求助10
4秒前
丘比特应助郑文涛采纳,获得10
5秒前
所所应助卫川影采纳,获得10
5秒前
华仔应助可耐的老虎采纳,获得10
6秒前
无限的老九完成签到 ,获得积分10
6秒前
6秒前
英姑应助活力立诚采纳,获得10
6秒前
卷毛完成签到 ,获得积分10
6秒前
abcdulla777发布了新的文献求助10
7秒前
8秒前
娜尼啊发布了新的文献求助10
8秒前
NexusExplorer应助i3utter采纳,获得10
8秒前
领导范儿应助科研通管家采纳,获得10
8秒前
乐乐应助科研通管家采纳,获得10
8秒前
斯文败类应助科研通管家采纳,获得10
8秒前
FashionBoy应助科研通管家采纳,获得10
8秒前
星辰大海应助科研通管家采纳,获得10
8秒前
汉堡包应助科研通管家采纳,获得10
9秒前
完美世界应助科研通管家采纳,获得10
9秒前
李爱国应助科研通管家采纳,获得10
9秒前
9秒前
9秒前
9秒前
9秒前
9秒前
9秒前
9秒前
9秒前
小荇发布了新的文献求助10
9秒前
wnx001111完成签到,获得积分10
9秒前
syhjxk完成签到,获得积分10
9秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3969335
求助须知:如何正确求助?哪些是违规求助? 3514162
关于积分的说明 11172430
捐赠科研通 3249456
什么是DOI,文献DOI怎么找? 1794853
邀请新用户注册赠送积分活动 875437
科研通“疑难数据库(出版商)”最低求助积分说明 804809