اثر پوشش خوراکی آلژینات و اسانس لعل کوهستان بر خصوصیات فیزیکوشیمیایی، میکروبی و حسی هویج رنده‌شده طی زمان ماندگاری

نوع مقاله : مقاله پژوهشی

نویسندگان

• علی حسینی
• نفیسه زمین‌دار
• یاسمن اسمعیلی

گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه آزاد اسلامی واحد اصفهان (خوراسگان)، اصفهان، ایران

https://doi.org/10.22067/ifstrj.2022.78868.1207

چکیده

تلاش برای کاهش ضایعات غذایی اولویت صنعت غذا است. هدف از این پژوهش بررسی تأثیر پوشش آلژینات و اسانس لعل کوهستان بر ویژگی‌های فیزیکوشیمیایی و میکروبی هویج رنده‌شده در طول انبارداری بود. هویج‌های رنده‌شده (شاهد و پوشش‌دهی‌شده) پس از توزین تحت اتمسفر اصلاح‌شده در بسته‌های پلی‌پروپیلنی بسته‌بندی و به مدت 12 روز در دمای 4 درجۀ سانتی‌گراد نگهداری شد. به‌این‌منظور، آزمون‌های رنگ، اسید آسکوربیک و مواد جامد محلول کل، اسیدیته، pH، دی‌اکسیدکربن، کاهش وزن و کاروتنوئید (3 تکرار) و شمارش کلی و کپک مخمر (2 تکرار) در قالب طرح کاملاً تصادفی با آرایش فاکتوریل با 6 تیمار با آلژینات 5/1 درصد و غلظت‌های مختلف اسانس لعل کوهستان (150 و ppm250) و نمونه‌برداری در روزهای 1، 3، 6، 9 و 12 انجام شد. نتایج نشان داد میزان اسیدیته، کاروتنوئید و اسید آسکوربیک، مقدارL*  و ویژگی‌های حسی (رنگ، مقبولیت، عطروطعم) باتوجه‌به گذشت زمان کاهش و میزان pH، کاهش وزن، مقادیرa* ، b*، گاز دی‌اکسیدکربن، مواد جامد محلول کل و شمارش کلی افزایش یافت (05/0P<). همچنین با افزایش غلظت اسانس و آلژینات، میزان اسیدیته، کاروتنوئید، اسید اسکوربیک،L*  افزایش و مقادیر pH، کاهش وزن، مواد جامد،a* ، b*، کربن دی اکسید و شمارش کلی کاهش یافت (05/0P<). نتایج حاصل از شمارش کپک و مخمر نمونه‌ها هیچ‌گونه رشدی از شاخص­های مذکور تا روز 12 را نشان نداد. در مجموع اسانس لعل کوهستان و آلژینات بر بهبود ویژگی‌های هویج رنده‌شده تحت اتمسفر اصلاح‌شده در طول انبارداری مؤثر بود.

کلیدواژه‌ها

• آلژینات
• اتمسفر اصلاح شده
• اسانس لعل کوهستان
• پلی پروپیلن

موضوعات

• فناوری مواد غذایی

©2023 The author(s). This is an open access article distributed under Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source.

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