نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری ، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ایران

2 استاد، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ایران

3 استاد، دانشکده دامپزشکی، دانشگاه شیراز، شیراز، ایران ‏

چکیده

به­منظور حفظ صفات کیفی، ویژگی­های حسی و کاهش آلودگی میکروبی بذرپوشینه­های انار رقم رباب نی­ریز، اثر ترکیبی بسته‌بندی با دو نوع پوشش پلیمری و غلظت‌های مختلف سینامالدئید، آزمایشی به‌صورت فاکتوریل سه عاملی در قالب طرح کاملاً تصادفی در سه‌ تکرار انجام شد. عامل اول پوشش‌های پلیمری در دو سطح (پلی‌اتیلن + پلی‌استر و بی‌اکسیلاری‌ارینتت‌پلی‌پروپیلن)، عامل دوم غلظت‌های سینامالدئید در چهار سطح (صفر، 100، 150 و 200 میکرولیتر در لیتر) و عامل سوم زمان نمونه‌برداری در شش سطح (روزهای صفر، 5، 10، 15، 20 و 25) بود. بهترین ویژگی‌های حسی بذرپوشینه انار مربوط به روزهای اول انبارمانی بود و با گذشت زمان مطلوبیت عطر و طعم کاهش یافت. تغییرات ویژگی­های حسی و پارامترهای کیفی مرتبط با آن در تیمار بسته‌بندی با پوشش پلیمری پلی‌اتیلن + پلی‌استر حاوی سینامالدئید 200 میکرولیتر در لیتر نسبت به سایر تیمارها کمتر بود. کمترین تعداد کلنی کپک و مخمر، باکتری­های مزوفیل هوازی و باکتری­های سایکروفیل مربوط به پوشش پلی‌اتیلن + پلی‌استر و غلظت 200 میکرولیتر در لیتر سینامالدئید در روز صفر انبارمانی بود که با پوشش پلیمری پلی‌اتیلن + پلی‌استر حاوی غلظت 100 و 150 میکرولیتر در لیتر سینامالدئید و پوشش پلیمری بی‌اکسیلاری‌ارینتت‌پلی‌پروپیلن حاوی غلظت 100، 150 و 200 میکرولیتر در لیتر سینامالدئید در همان روز تفاوت معنی­داری نداشت. تیمار پوشش پلیمری پلی‌اتیلن + پلی‌استر حاوی 200 میکرولیتر در لیتر سینامالدئید باعث افزایش ماندگاری بذرپوشینه انار تا 25 روز شد. پوشش پلیمری پلی‌اتیلن + پلی‌استر حاوی غلظت 200 میکرولیتر در لیتر سینامالدئید باعث حفظ صفات کیفی و ویژگی‌های حسی بذرپوشینه‌ها همراه با حداقل آلودگی میکروبی در مدت انبارمانی شد.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of modified atmosphere packaging and cinnamaldehyde on sensorial ‎characteristics and microbial contamination of pomegranate arils ‎

نویسندگان [English]

  • Azam Ranjbar 1
  • Asghar Ramezanian 2
  • Shahram Shekarforoush 3

1 Ph. D. Candidate, School of Agriculture, Shiraz University, Shiraz, Iran

2 Professor, School of Agriculture, Shiraz University, Shiraz, Iran

3 Professor, School of Veterinary, Shiraz University, Shiraz, Iran‎

چکیده [English]

In order to maintain sensorial characteristics and to reduce the microbial load of pomegranate cv. Rabab-e-Neyriz arils, the combined effects of packaging with two types of polymer films, and different concentrations of cinnamaldehyde a three-factor factorial experiment was conducted in a completely randomized design with three replications. The first factor included polymeric films at two levels (biaxial oriented polypropylene (BOPP) and Polyethylene + Polyester (PE+PES)), the second factor was the concentrations of cinnamaldehyde at four levels (0, 100, 150, and 200 μL L-1) and the third factor was storage times at six levels (0, 5, 10, 15, 20, and 25 day). The best sensorial characteristics was recorded for the first day of storage and the desirability of aroma and tase decreased over time. Changes in sensorial characteristics and related qualitative parameters were more slowly in arils packaged with PE+PS containing 200 μL L-1 cinnamaldehyde. The lowest number of mold and yeast was found in arils packaged with PE+PES film containing 200 μL L-1 cinnamaldehyde on the first day of storage; however, it was not significantly different with PE+PES film containing 100 and 150 μL L-1 cinnamaldehyde and BOPP film containing 100, 150, and 200 μL L-1 cinnamaldehyde at the same time. Packaging with PE+PES film containing 200 μL L-1 cinnamaldehyde extended the shelf life of pomegranate arils up to 25 days. Packaging with PE+PES film containing 200 μL L-1 cinnamaldehyde maintained the quality and sensory properties of arils with minimal microbial contamination during storage.

کلیدواژه‌ها [English]

  • Aerobic mesophilic
  • Modified atmosphere
  • mold and yeast
  • psychrophilic
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