The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou 310018, China.
Bioresour Technol. 2010 May;101(9):3268-73. doi: 10.1016/j.biortech.2009.12.062. Epub 2010 Jan 6.
Pectins were extracted from mulberry branch bark, a byproduct of the sericulture industry. A single-factor experiment was used to optimize the production conditions. Under optimal conditions, the galacturonic acid yields from bark with and without epidermis were 61.73 + or - 1.39% and 35.12 + or - 0.24%, respectively. The extracted pectins mainly consisted of galacturonic acid with a trace amount of neutral sugars, and the total galacturonic acid content in the pectins extracted from the bark without epidermis reached 85.46 + or - 2.76%. Pectins extracted from bark without epidermis had a higher degree of esterification (71.13 + or - 1.67%) than those extracted from bark with epidermis (24.27 + or - 2.89%). Pectin solution from bark without epidermis showed higher apparent viscosity, suggesting its higher gelation ability. Thus, the mulberry branch bark is a potential source of pectin with different degrees of esterification.
从桑枝皮（蚕桑业的副产物）中提取了果胶。采用单因素实验优化了生产条件。在最佳条件下，带表皮和不带表皮桑枝皮的半乳糖醛酸得率分别为 61.73 ± 1.39%和 35.12 ± 0.24%。提取的果胶主要由半乳糖醛酸组成，含有少量中性糖，不带表皮桑枝皮中提取的果胶总半乳糖醛酸含量达到 85.46 ± 2.76%。与带表皮的果胶（酯化度 24.27 ± 2.89%）相比，不带表皮的果胶酯化度更高（71.13 ± 1.67%）。与带表皮的果胶相比，来自不带表皮桑枝皮的果胶溶液具有更高的表观黏度，表明其具有更高的凝胶能力。因此，桑枝皮是一种具有不同酯化程度的果胶的潜在来源。
