تأثیر شستشو و پوشش نانومرکب فعال کربوکسی‌متیل سلولز- نانو رس حاوی عصاره مرزنجوش (Origanum vulgare L) بر کیفیت تخم‌مرغ طی دوره نگهداری در دمای محیط

نویسندگان
مونا احسان
داریوش خادمی شورمستی
گروه کشاورزی، واحد سوادکوه، دانشگاه آزاد اسلامی، سوادکوه، ایران
10.52547/fsct.18.118.107
چکیده
روش­های مورد استفاده جهت حفظ کیفیت تخم­مرغ طی دوره نگهداری عمدتاً مبتنی بر غیر فعال­کردن میکروارگانیسم­ها و جلوگیری از تبادلات جرمی است. به­منظور بررسی تأثیر بکارگیری شستشو با آب و پوشش­دهی پوسته با استفاده از پوشش نانومرکب فعال بر پایه کربوکسی­متیل سلولز 2 % حاوی نانورس 5/3 % و عصاره 2 % مرزنجوش بر کیفیت داخلی و پوسته تخم­مرغ، آزمایشی با 4 تیمار شامل شاهد (بدون شستشو و بدون پوشش)، شسته و بدون پوشش، بدون شستشو و پوشش­دار، شسته و پوشش­دار و 3 تکرار طی یک دوره نگهداری 4 هفته­ای در دمای محیط (oC2±25) با ارزیابی هفتگی فراسنجه­های مورد مطالعه اجرا شد. در پایان دوره نگهداری، بیشترین مقادیر واحد هاو (15/0±71/49)، اندیس زرده (00/0±32/0) و کمترین مقادیر درصد افت وزنی (02/0±07/3)، pH سفیده (02/0±59/8) و اندیس اسید تیوباربیتوریک (mg MDA/Kg 03/0±125/0) در تخم­مرغ­های پوشش­دار دیده شد (P<0.05). در ارزیابی شاخص­های رنگی زرده نیز تخم­مرغ­های پوشش­دار به­طور معنی­داری (P<0.05) دارای مقادیر بالاتر b* (24/57)، a* (72/7-) و پایین­تر L* (51/45) بودند. صرفنظر از پوشش­دهی، شستشوی تخم­مرغ تأثیر معنی­داری بر فراسنجه­های مورد ارزیابی نداشت. بنابراین بکارگیری پوشش نانومرکب فعال کربوکسی­متیل سلولز- نانو مونت موریلونیت- عصاره مرزنجوش با دارا بودن خواص ممانعتی، ضداکسیدانی و ضد میکروبی، جهت افزایش ماندگاری تخم­مرغ در دمای محیط به­مدت 4 هفته توصیه می­شود.
کلیدواژه‌ها
پوشش نانومرکب فعال
تخم‌مرغ
شستشو
کیفیت داخلی
ماندگاری

موضوعات

عنوان مقاله English

Effect of washing and active nanocomposite coating of carboxymethyl cellulose-nanoclay containing marjoram extract (Origanum vulgare L) on egg quality during storage at ambient temperature

نویسندگان English

Mona Ehsan
dariush khademi shurmasti
Dep. Agricul., Savadkooh branch, IAU, Savadkooh, Iran
چکیده English

The methods used to maintain the quality of eggs during the storage period are mainly based on inactivating microorganisms and preventing mass exchanges. In order to investigate the effect of water washing and shell coating using active nanocomposite coating based on 2% carboxymethyl cellulose containing 3.5% nanoclay and 2% marjoram extract on internal quality and egg shell, an experiment with 4 treatments including control (unwashed and uncoated), washed and uncoated, unwashed and coated, washed and coated and 3 replicates during a 4-week storage period at ambient temperature (25±2oC) with weekly evaluation the studied parameters were performed. At the end of the storage period, the highest values ​​of HU (49.71±0.15), YI (0.32±0.00) and the lowest values ​​of WL percentage (3.07±0.02), albumen pH (8.59±0.02), TBARS (0.125±0.03 mg MDA/Kg) and TVC (2.75±0.05 log cfu/ml) were observed in coated eggs (P<0.05). In the evaluation of yolk color indices, coated eggs had significantly (P<0.05) higher values ​​of b* (57.24), a* (-7.72) and lower value of L* (45/51). Regardless of the coating, egg washing had no significant effect on the evaluated parameters. Therefore, the use of active nanocomposite coating of carboxymethyl cellulose - nano montmorillonite - marjoram extract with barrier, antioxidant and antimicrobial properties is recommended to increase the shelf life of eggs at ambient temperature for 4 weeks.

کلیدواژه‌ها English

Active nanocomposite coating
Egg
Washing
Internal quality
shelf life
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