期刊
ULTRASONICS SONOCHEMISTRY
卷 84, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.ultsonch.2022.105977
关键词
Ultrasound drying; Broccoli; Glucoraphanin; Sulforaphane; Melatonin; Pretreatment
资金
- National Natural Science Foundation of China [32072351]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
In this study, the authors investigated the drying of broccoli florets using exogenous pretreatment and contact ultrasound-assisted drying. They analyzed various components and factors involved in the metabolism pathway to understand the effects of the dehydration methods on the conversion of glucoraphanin to sulforaphane. The results showed that the sequential exogenous pretreatment and ultrasound drying shortened the drying time and both melatonin and vitamin C pretreatment protected the sulforaphane content and myrosinase activity. This study enriches the biochemistry knowledge about the transformation of glucoraphanin to sulforaphane and suggests that the combined pretreatment and ultrasound drying can preserve bioactive sulforaphane in dehydrated broccoli.
In this investigation, the combinations of exogenous pretreatment (melatonin or vitamin C) and contact ultrasound-assisted air drying were utilized to dry broccoli florets. To understand the influences of the studied dehydration methods on the conversion of glucoraphanin to bioactive sulforaphane in broccoli, various components (like glucoraphanin, sulforaphane, myrosinase, etc.) and factors (temperature and moisture) involved in the metabolism pathway were analyzed. The results showed that compared with direct air drying, the sequential exogenous pretreatment and contact ultrasound drying shortened the drying time by 19.0-22.7%. Meanwhile, contact sonication could promote the degradation of glucoraphanin. Both melatonin pretreatment and vitamin C pretreatment showed protective effects on the sulforaphane content and myrosinase activity during the subsequent drying process. At the end of drying, the sulforaphane content in samples dehydrated by the sequential melatonin (or vitamin C) pretreatment and ultrasound-intensified drying was 14.4% (or 26.5%) higher than only air-dried samples. The correlation analysis revealed that the exogenous pretreatment or ultrasound could affect the enzymatic degradation of glucoraphanin and the generation of sulforaphane through weakening the connections of sulforaphane-mymsinase, sulforaphane-VC, and VC-myrosinase. Overall, the reported results can enrich the biochemistry knowledge about the transformation of glucoraphanin to sulforaphane in cruciferous vegetables during drying, and the combined VC/melatonin pretreatment and ultrasound drying is conducive to protect bioactive sulforaphane in dehydrated broccoli.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据