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护色与浓缩工艺对梨膏品质的影响 预览

Effect of Color Protection and Concentration Process on the Quality of Pear Paste
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摘要 以砀山梨为原料,对梨膏加工过程中的护色和浓缩工艺进行优化研究。确定砀山梨膏的浓缩终点及流变类型;通过单因素试验和正交试验,确定梨膏复合护色剂的最佳配比;通过单因素试验确定真空浓缩的最佳温度;最后研究比较与同类产品的品质差异。结果表明,砀山梨膏的浓缩终点为69°Brix;梨膏表现为假塑性非牛顿流体,具有剪切稀化现象;砀山梨膏的最佳护色工艺参数:柠檬酸浓度0.7%,抗坏血酸浓度0.04%,氯化钠浓度1.1%;最佳浓缩工艺参数:浓缩温度70℃,真空度-0.1MPa,转速60r/min。 With Dangshan pear as raw material,color protection and concentration process in the processing of pear paste were optimized. The terminal concentration point and rheological type of pear paste were determined. The best ratio of pear paste composite color protection was determined by single factor experiment and orthogonal experiment. Then,the optimal temperature of vacuum concentration was determined by single factor experiment. Finally,the study compared the quality differences with the congeneric product. The results showed that the terminal concentration point of pear paste was 69 °Brix,and the pear paste belonged to pseudoplastic non-Newtonian fluid with shear thinning phenomenon. The optimal technical parameters for pear paste composite color protection was citric acid 0.7 %,ascorbic acid 0.04 % and sodium chloride 1.1 %. And the optimal vacuum concentration parameters for pear paste were also obtained. The vacuum concentration temperature was 70 ℃,vacuum degree was -0.1 MPa and the rotary speed was 60 r/min.
作者 赵鹏广 刘伟 尚俊杰 金涛 王运香 颜玲 刘长虹 ZHAO Peng-guang;LIU Wei;SHANG Jun-jie;JIN Tao;WANG Yun-xiang;YAN Ling;LIU Chang-hong(School of Food and Biological Engineering,Hefei University of Technology,Hefei 230009,Anhui,China;School of Electronic and Information Engineering,Anhui Jianzhu University,Hefei 230601,Anhui,China;Anhui Dangshan Xingda Canned Foods Co.,Ltd.,Suzhou 235300,Anhui,China)
出处 《食品研究与开发》 CAS 北大核心 2019年第13期138-144,共7页 Food Research and Developent
基金 安徽省科技重大专项计划项目(16030701078).
关键词 砀山梨 梨膏 浓缩终点 护色 真空浓缩 Dangshan pear pear paste terminal concentration point color protection vacuum concentrate
作者简介 赵鹏广(1996-),男(汉),在读硕士,研究方向:农产品加工及贮藏;通信作者:刘长虹(1982-),女(汉),副教授,研究方向:农产品加工及贮藏.
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