当前位置: 首页 > 文章 > 低取代度小麦磷酸酯淀粉的制备及性质研究 安徽农业大学学报 2005,32 (1) 51-54
Position: Home > Articles > Study on Preparation of Wheat Starch Phosphate Ester with Low Degree of Substitution and Its Characteristics Journal of Anhui Agricultural University 2005,32 (1) 51-54

低取代度小麦磷酸酯淀粉的制备及性质研究

作  者:
杜先锋;张娟
单  位:
安徽农业大学食品科学与工程系
关键词:
半干法;小麦磷酸酯淀粉;制备;取代度;性质
摘  要:
以小麦淀粉为原料,选择焦磷酸钠为酯化剂,采用半干法合成低取代度小麦淀粉磷酸酯,研究所得产品的取代度、透明度、粘度和冻融稳定性等性质,并与小麦原淀粉的性质加以比较。结果表明,在pH为 5 9,反应温度为 150℃,磷酸盐的用量为淀粉干重的 0 0287,反应时间控制在 75min左右,可以获得低取代度小麦淀粉磷酸酯,其产品的取代度为 0 0221,粘度由原淀粉的 34Pa·s增大为 3. 700Pa·s,透明度由 3 .70%增大为20. 80%,析水率则由 46. 88%下降为 6. 56%。
译  名:
Study on Preparation of Wheat Starch Phosphate Ester with Low Degree of Substitution and Its Characteristics
作  者:
DU Xian-feng,ZHANG Juan (Department of Food Science and Technology,Anhui Agricultural University,Hefei 230036)
关键词:
half-wet production;wheat starch phosphate ester;preparation;degree of substitution;characteristic
摘  要:
In this experiment,wheat starch was used as a raw material to prepare wheat starch phosphate ester by esterification with pyrophosphate. The half - wet production was adopted to synthesize starch phosphate ester. The conditions were as follows: pH 5.9, reaction temperature 150℃, reaction time 75 min, ratio of pyrophosphate to starch(db) 0.0287. The degree of substitution of the produced modified starch was 0.0221, the starch paste clarity was increased from 3.70% to 20.80%, the viscosity from 34 Pa·s to 3 700 Pa·s. Meanwhile the syneresis was reduced from 46.88% to 6.56%.

相似文章

计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊