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Physicochemical properties and immune-enhancing activity of graded polysaccharides from the peels of stem lettuce (Lactuca sativa) by cascade membrane technology

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العنوان: Physicochemical properties and immune-enhancing activity of graded polysaccharides from the peels of stem lettuce (Lactuca sativa) by cascade membrane technology
المؤلفون: Xian-Guo Zou, Yu-Qin Cao, Jing-Jing Li, Xiao-Qian Guan, Ming Cai, Pei-Long Sun, Kai Yang
المصدر: Frontiers in Nutrition, Vol 9 (2022)
بيانات النشر: Frontiers Media S.A., 2022.
سنة النشر: 2022
المجموعة: LCC:Nutrition. Foods and food supply
مصطلحات موضوعية: membrane technology, polysaccharides, stem lettuce, physicochemical properties, immune-enhancing activity, Nutrition. Foods and food supply, TX341-641
الوصف: In this study, cascade membrane technology was applied to classify polysaccharides from the peels of stem lettuce (PPSLs), and three graded polysaccharides (PPSL100, PPSL10, and PPSL1) were obtained using ultrafiltration membranes of 100, 10, and 1 kDa in sequence. The physicochemical properties and immune-modulatory activity of three PPSLs fractions were analyzed and compared. Results showed that all three fractions have characteristic absorption peak of polysaccharides determined by FT-IR, and their monosaccharide composition only consisted of glucose determined by HPLC. PPSL10 had the highest contents of total sugar (88.09 ± 3.52%), uronic acid (2.55 ± 0.10%), and sulfate group (4.15 ± 0.20%). Besides, all three fractions exhibited immune-enhancing activities using RAW264.7 macrophages model, and PPSL10 was the best able to promote phagocytosis of neutral red and nitric oxide generation, which might relate to the high contents of above compositions and medium molecular weight (32 kDa). The findings indicated that PPSL10 could be developed as immune-modulator in the field of functional foods.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2296-861X
Relation: https://www.frontiersin.org/articles/10.3389/fnut.2022.981099/full; https://doaj.org/toc/2296-861X
DOI: 10.3389/fnut.2022.981099
URL الوصول: https://doaj.org/article/b812f28a69b34f18bf9ac02a0ad564d5
رقم الانضمام: edsdoj.b812f28a69b34f18bf9ac02a0ad564d5
قاعدة البيانات: Directory of Open Access Journals
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