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تأثیر زمان تیمار آنزیمی‌ترانس‌گلوتامیناز میکروبی بر خصوصیات فیلم خوراکی بر پایه ایزوله پروتئین آبپنیر | ||
| مهندسی بیوسیستم ایران | ||
| مقاله 14، دوره 47، شماره 3، آبان 1395، صفحه 519-527 اصل مقاله (753.67 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijbse.2016.59360 | ||
| نویسندگان | ||
| فرزانه کوراوند1؛ حسین جوینده* 2؛ حسن برزگر2؛ محمد حجتی2 | ||
| 1دانشجوی کارشناسی ارشد، گروه صنایع غذایی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان | ||
| 2عضو هیات علمی گروه علوم و صنایع غذایی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان | ||
| چکیده | ||
| در این مطالعه، تأثیر زمان تیمار آنزیمی ترانسگلوتامیناز میکروبی (MTGase) بر خصوصیات فیلم خوراکی بر پایه ایزوله پروتئین آبپنیر بررسی شد. نتایج نشان داد که خصوصیات فیلم تیمارشده با آنزیم، متأثر از زمان تیمار آنزیمی محلول تشکیلدهنده فیلم است. تیمار با زمان کم (1 ساعت) به طور معنیداری باعث افزایش مقاومت به کشش (TS) و کاهش درصد افزایش طول تا نقطه شکست (EB) در فیلم در مقایسه با نمونه شاهد شد. در فیلمهای تیمارشده، میزان TS بتدریج با افزایش زمان از 1 به 3 ساعت، کاهش و میزان EB بتدریج افزایش یافت. نفوذپذیری به بخار آب فیلم شاهد در مقایسه با فیلم تیمار شده با آنزیم به مدت 1 ساعت از gm-1s-1pa-110-10×6/3 به gm-1s-1pa-110-10×31/2 و حلالیت در آب آن از 07/37 به 97/19 درصد کاهش یافت؛ اما همزمان با افزایش زمان، حلالیت در آب و نفوذپذیری به بخار آب افزایش یافت. | ||
| کلیدواژه‌ها | ||
| فیلم خوراکی؛ خواص مکانیکی؛ آنزیم ترانس گلوتامیناز؛ ایزوله پروتئین آب پنیر | ||
| عنوان مقاله [English] | ||
| The influence of enzymatic treatment time of microbial transglutaminase on the properties of edible film based on whey protein isolate | ||
| نویسندگان [English] | ||
| Farzaneh Kooravand1؛ Hosein Jooiandeh2؛ Hasan Barzgar2؛ Mohammad Hojjati2 | ||
| چکیده [English] | ||
| The effect of enzymatic treatment time of microbial transglutaminase (MTGase) on the characteristics of whey protein isolate (WPI) films was investigated. Results shown that the properties of MTGase-treated films were affected by increasing the enzymatic treatment time. Enzymatic treatment at lower incubation time, i.e. for 1 h, significantly resulted in higher values of tensile strength (TS) and lower values of elongation at break (EB) as compared to control film. In the MTGase-treated films, the TS values decreased gradually and EB values increased progressively with increasing incubation time from 1 to 3 h. Water vapor permeability (WVP)and total soluble matter(TSM) of control film in comparison with MTGase-treated films decreased from3.6 ×10 10 to 2.31 ×10 10 g m-1 s-1 pa-1 and from 37.07 to 19.97 percent, respectively. However, as the time of enzymatic treatment was increased the TSM and WVP were gradually increased. | ||
| کلیدواژه‌ها [English] | ||
| Edible film, Mechanical properties, Microbial transglutaminase, Whey protein isolate | ||
| مراجع | ||
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