کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7599258 | 1492142 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of electron beam on chemical changes of nutrients in infant formula
ترجمه فارسی عنوان
اثر پرتو الکترونی بر تغییرات شیمیایی مواد مغذی در فرمول نوزاد
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کلمات کلیدی
پرتو الکترون، اشعه ماوراء بنفش تابش یونیزه، ترکیب تغذیه ای، کیفیت تغذیه، فرمول شیر شیرین، مشخصات اسید چرب، مشخصات اسید آمینه، اکسیداسیون لیپید،
Food irradiation - اشعه ماوراء بنفشLipid oxidation - اکسیداسیون لیپیدیionising radiation - تابش یونیزهNutritional composition - ترکیب تغذیه ایInfant milk formula - فرمول شیر تغذیه ایAmino acid profile - مشخصات اسید آمینهFatty acid profile - مشخصات اسید چربElectron beam - پرتوی الکترونیNutritional quality - کیفیت تغذیه ای
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Infant milk formula has recently been implicated as a transmission vehicle for an emerging foodborne pathogen, Enterobacter sakazakii, resulting in high mortality rates. Electron beam (e-beam) efficiently and non-thermally inactivates foodborne pathogens, including E. sakazakii, in infant milk formula. However, the effects of e-beam on chemical changes of nutrients in infant formula have not been determined. Therefore, the objective of this study was to fulfill this gap. Dehydrated infant milk formula was processed with e-beam at 0 (control) to 25Â kGy. Amino acid, fatty acid, and mineral profiles (AAP, FAP, and MP, respectively), as well as protein degradation and lipid oxidation, were determined. There were no differences (PÂ >Â 0.05) in FAP, AAP, and MP. SDS-PAGE electrophoresis qualitatively detected three major protein bands in all samples up to 25Â kGy. Densitometry analysis of SDS-PAGE gels confirmed no size degradation (PÂ >Â 0.05) as a function of increased e-beam dose. Totol-volatile-basic-nitrogen (TVBN) excluded (PÂ >Â 0.05) protein degradation due to microbial activity. There was no increase (PÂ >Â 0.05) in lipid oxidation, as assessed with thiobarbituric-reactive-substances (TBARS), except in samples processed at 25Â kGy. Dehydrated formula has low water activity, which likely protected nutrients from e-beam-induced chemical changes. This study demonstrates that proteins, lipids, and minerals in infant milk formula are stable when processed with e-beam up to 25Â kGy at low temperature and under anaerobic conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 149, 15 April 2014, Pages 208-214
Journal: Food Chemistry - Volume 149, 15 April 2014, Pages 208-214
نویسندگان
Adiam Tesfai, Sarah K. Beamer, Kristen E. Matak, Jacek Jaczynski,