کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1184067 1492092 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microwave-assisted isomerisation of lactose to lactulose and Maillard conjugation of lactulose and lactose with whey proteins and peptides
ترجمه فارسی عنوان
ایزومریزاسیون با استفاده از مایکروویو از لاکتوز به لکتولوز و مایهاردولاسیون لاکتولوز و لاکتوز با پروتئین و پپتید های پنیر
کلمات کلیدی
لاکتولوز، ایزوله پروتئین آب پنیر، پروتئین آب پنیر هیدرولیزات، واکنش مییلارد، خواص عملکردی، قابلیت هضم
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Lactose was isomerised to lactulose and protein (WPI) was hydrolysed to WPH.
• WPI and WPH were glycated with lactose and lactulose by microwave heating.
• Lactose and WPH were more reactive than lactulose and WPI.
• WPI-lactulose conjugate particles were greater than WPH-lactulose counterparts.
• Conjugation with sugars increased the emulsification and solubility of WPI and WPH.

Lactose was isomerised to lactulose by microwave heating and purified by a methanolic procedure to a product with approximately 72% lactulose content. Afterwards, lactose and the lactulose-rich product (PLu) were conjugated with either whey protein isolate (WPI) or its antioxidant hydrolysate (WPH) through microwaving. Lactose had a higher Maillard reactivity than PLu, and WPH was more reactive than WPI. The browning intensity of WPI-sugar systems was however higher than that of WPH-sugar pairs. Atomic force microscopy showed larger (up to ≈103 nm) particles for WPI-PLu conjugates compared to WPH-PLu counterparts (up to ≈39 nm). The Maillard conjugation progressively increased the radical-scavenging activity of WPI/WPH-sugar pairs with increasing conjugation time and improved the foaming properties of WPI and WPH. The WPI/WPH-sugar conjugates showed higher solubility and emulsification index than unreacted counterpart pairs. For native WPI, β-lactoglobulin was not degraded by in vitro gastric digestion, whereas for WPH-PLu conjugates degraded completely.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 200, 1 June 2016, Pages 1–9
نویسندگان
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