上海青保脆护绿预处理条件优化研究  

Optimization of Pretreatment Conditions for Brittleness-Keeping and GreenProtection of Brassica chinensis L.by Response Surface Methodology

作　　者：周湘 李思敏 ZHOU Xiang;LI Simin(Guangdong Guangken Green Agricultural Products Co.,Ltd,Guangzhou 510630,China)

机构地区：[1]广东广垦绿色农产品有限公司,广东广州510630

出　　处：《广东轻工职业技术学院学报》2022年第6期15-20,共6页Journal of Guangdong Industry Polytechnic

摘　　要：研究了预处理过程中氯化钙浓度、烫漂温度及时间对上海青保脆护绿效果的影响,并通过设计三因素三水平响应面优化实验,以叶绿素保留率和剪切力为响应值,对上海青预处理条件进行优化。研究结果表明:最优的预处理条件为氯化钙浓度0.6%(w/v),烫漂温度86℃,烫漂时间43 s。最优预处理条件下上海青中叶绿素保留率达到96.42%(w/w),剪切力为28.41 N,与预测值基本一致。经烫漂后的上海青色泽翠绿,脆度适中,表明优化条件可行可靠。Influences of calcium chloride concentration, blanching temperature and period on brittleness-keeping and green-protection effects for Brassica chinensis L. were investigated. The pretreatment conditions for Brassica chinensis L. were optimized by response surface methodology(RSM) of 3 factors and 3 levels experimental design using chlorophyll retention rate and shear force as response values. Results showed that the optimum pretreatment conditions for brittleness-keeping and green-protection of Brassica chinensis L. were as follows: calcium chloride concentration of 0. 6%(w/v), blanching temperature of 86℃, and blanching period of 46 s. Under the optimized pretreatment conditions, chlorophyll retention rate and shear force of Brassica chinensis L. were 96. 42%(w/w) and 28. 41 N which was highly consistent with the predictive value. Brassica chinensis L. blanched showed greenish color and proper brittleness implicating that the pretreatment conditions obtained by RSM were feasible and reliable.

关 键 词：上海青 保脆 护绿 预处理条件 优化 

分 类 号：TS255.5[轻工技术与工程—农产品加工及贮藏工程]