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تاثیر پخت با سامانه تابش مادون‌قرمز-بخار فوق اشباع در کنترل کپک‌زدگی نان گندم حاوی خمیرترش سبوس برنج | ||
| تحقیقات مهندسی صنایع غذایی | ||
| دوره 22، شماره 2 - شماره پیاپی 75، دی 1402، صفحه 69-84 اصل مقاله (1.9 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/fooder.2024.357439.1325 | ||
| نویسندگان | ||
| مهدی پور رشیدی1؛ علیرضا صادقی* 2؛ امان محمد ضیایی فر3؛ محمد قربانی4؛ زهره مختاری5 | ||
| 1دانشجوی کارشناسی ارشد زیست فناوری مواد غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| 2گروه علوم و صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| 3دانشکده صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| 4گروه علوم و صنایع غذایی، دانشکده صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان | ||
| 5دانشجوی دکتری مهندسی صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| چکیده | ||
| استفاده توام از روشهای نوین پخت به همراه بسترههای تخمیری اهمیت به سزایی در کنترل کپک زدگی نان دارد. در پژوهش حاضر، باکتری اسید لاکتیک غالب خمیرترش سبوس برنج پس از جداسازی و شناسایی مولکولی به عنوان کشت آغازگر در فرآوری نان خمیرترشی بهکارگرفته شد. در مرحلۀ بعد، تاثیر استفاده از سامانۀ پخت آون-فروسرخ، آون-بخار فوق اشباع و آون به منظور جلوگیری از توسعۀ سطحی قارچ در نانهای گندم تولیدی بررسی گردید. توالییابی محصولات PCR منجر به شناسایی پدیوکوکوس اسیدیلاکتیسی شد. کمترین میزان توسعۀ سطحی قارچ معادل با 27.06 درصد در نان گندم حاوی تخمیر کنترل شدۀ سبوس برنج پخته شده با آون-بخار مشاهده گردید که در مقایسه با نمونه شاهد به شکل معنی داری (p≤0.05) کمتر بود. نانهای گندم حاوی خمیرترش سبوس برنج، در مقایسه با نان شاهد، در هر سه فرایند پخت توسعۀ سطحی قارچ کمتر و تخلخل بیشتری داشتند. بیشترین سفتی بافت مربوط به نان گندم حاوی تخمیر کنترل شده سبوس برنج و پخته شده با آون-بخار فوق اشباع و کمترین سفتی نیز مربوط به نان شاهد پخته شده با فرایند مذکور بود. پذیرش کلی نانهای تولیدی نیز تفاوت زیادی با یکدیگر نداشت و عمدتا اختلافمعنیداری بین آنها نبود. با توجه به قابلیتهای فناوری-عملکردی مناسب جدایۀ لاکتیکی میتوان از آن به عنوان کشت آغازگر محافظت کننده در صنایع تخمیری استفاده کرد. استفاده از فرایند فروسرخ در پخت نان نیز با توجه به سرعت پخت نسبتا بالا و مصرف انرژی پایین، اثر ضد قارچی و حرارتدهی یکنواخت میتواند مفید واقع شود. | ||
| کلیدواژه‌ها | ||
| پخت فروسرخ؛ تخمیر کنترل شده سبوس برنج؛ اثر ضد قارچی | ||
| عنوان مقاله [English] | ||
| Effect of baking by infrared radiation-superheated vapor system on control of mouldiness in the wheat bread containing rice-bran sourdough | ||
| نویسندگان [English] | ||
| Mahdi Pourrashidi1؛ Alireza Sadeghi2؛ Aman mohammad Ziaiifar3؛ Mohammad Ghorbani4؛ Zohreh Mokhtari5 | ||
| 1M.Sc. student of Food Biotechnology, Department of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| 2Department of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| 3Department of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| 4Department of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| 5Ph.D. student of Food Engineering, Department of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| چکیده [English] | ||
| Simultaneous application of modern baking methods with fermented substrates is of great importance in controlling bread mouldiness. In the present study, predominant LAB was isolated from rice bran sourdough and after molecular identification, it was used as a starter culture in sourdough bread processing. In the next step, effect of using oven-infrared radiation, oven-supersaturated vapor and oven baking systems was investigated on the inhibition of surface mouldiness in produced breads. Sequencing results of the PCR products led to the identification of Pediococcus acidilactici. The lowest level of surface mouldiness with 27.06% was observed in bread containing controlled fermented rice bran baked in an oven-supersaturated vapor, which was significantly (P≤0.05) lower than the control sample. Wheat breads containing rice bran sourdough in all the three baking processes had less fungal surface expansion and more porosity, compared to the control bread. The highest amount of crumb hardness was belonged to wheat bread containing controlled fermented rice bran and baked with oven-supersaturated vapor, and the lowest hardness was related to the control bread baked with this process. The overall acceptability of the produced breads did not differ much from each other, and there was mainly no significant difference among them. Considering the appropriate techno-functional capabilities of the LAB isolated from fermented rice bran, it can be used as a protective starter culture in the fermentation industry. Using the infrared process in bread baking can be useful due to the relatively high baking speed and low energy consumption, antifungal effect and uniform heating. | ||
| کلیدواژه‌ها [English] | ||
| Infrared baking, Controlled fermented rice bran, Antifungal effect | ||
| مراجع | ||
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