食品科学2018，Vol.39Issue(9)：232-238,7.DOI:10.7506/spkx1002-6630-201809035
预冷时机对四季豆和豇豆品质和生理生化特性的影响
Impact of Precooling Time on Quality and Physio-Biochemical Characteristics of Common Bean (Phaseolus vulgaris L.) and Cowpea (Vigna sinensis) under Controlled Atmosphere Storage Conditions
摘要
Abstract
In order to explore the impact of precooling time on their quality and physio-biochemical characteristics, freshly harvested common bean ( Phaseolus vulgaris L.) and cowpea ( Vigna sinensis ) were placed at room temperature ((20.5 ± 4.5) ℃) with a relative humidity of 72% for 0, 6 and 12 h, respectively, and precooled to 9.0 ℃ before 15 d controlled atmosphere storage (gas composition: 3% O2+ 1% CO2+ 96% N2, temperature: (9.0 ± 0.5) ℃, humidity: (80 ± 5)%) followed by 2 d stimulated shelf life at room temperature (temperature: (24.5 ± 4.5) ℃; humidity: (65 ± 2)%). Samples were collected for quality and physio-biochemical analysis after controlled atmosphere storage and shelf life. Results showed that compared with those precooled after 6 and 12 h at room temperature, P. vulgaris L. and V. sinensis precooled immediately after harvest possessed higher sensory evaluation score and higher contents of reducing sugar and chlorophyll as well as lower mass loss rate, respiration intensity, spot index and cellulose content after controlled atmosphere storage and shelf life. Meanwhile, immediate precooling maintained high activities of peroxidase (POD), catalase (CAT), superoxide dismutase (SOD) and cellulose (CEL), and low levels of respiration intensity (RI), superoxide anion (O2-·) production rate, hydrogen peroxide (H2O2) and malondialdehyde (MDA). Therefore, immediate precooling could delay the senescence of P. vulgaris L. and V. sinensis during controlled atmosphere storage and shelf life and maintain high quality by improving antioxidant status and reducing oxidative stress.关键词
四季豆/豇豆/预冷时机/品质/生理生化特性Key words
Phaseolus vulgaris L./ Vigna sinensis/ precooling time/ quality/ physio-biochemical characteristics分类
轻工纺织引用本文复制引用
王利斌,林晨,罗海波,金昌海,郁志芳,千春录..预冷时机对四季豆和豇豆品质和生理生化特性的影响[J].食品科学,2018,39(9):232-238,7.基金项目
公益性行业(农业)科研专项(2014030232) （农业）
国家自然科学基金青年科学基金项目(31401612) （31401612）
浙江省自然科学基金面上项目(LY14C200005) （LY14C200005）
江苏省基础研究计划(自然科学基金)-青年基金项目(BK20140483) （自然科学基金）
江苏省高校自然科学研究面上项目(14KJB210010) （14KJB210010）
中国博士后科学基金面上项目(2014M560451) （2014M560451）
