A Farmer Affordable Technique: Packaging with Nitrogen Gas (N2) Enhanced Shelf-Life of Fresh Oyster Mushroom (Pleurotus ostreatus)

Md Asif Hasan Mazumder Niloy, Sumaiya Khanam Onia, Salman Haque, Md ANM Shawgatul Haque, Soyabur Rahman, Sabina Yesmin, Jebunnahar Khandakar
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Abstract

The commercial viability of mushrooms in Bangladesh faces a challenge due to the mushrooms' short shelf life, arising from their high respiration rates, elevated moisture content, and the absence of a protective cuticular structure. To solve this problem, different ways of enhancing the packaging conditions have been explored. Our research focuses on the use of the inert gas, nitrogen, to extend the shelf life of Pleurotus ostreatus (oyster mushrooms). Nitrogen, being an inert gas, is assumed to ensure the preservation of the quality of fresh mushrooms. In our study, freshly harvested mushrooms were carefully packaged in polypropylene (PP) bags both with and without nitrogen gas. Which were then stored both at room temperature and in the refrigerator.  Throughout the storage period, the changes in seven quality parameters - total soluble sugar (TSS), browning index (BI), weight loss, pH, moisture content, odor, and texture were assessed at two-day intervals. The results revealed no significant changes in TSS or pH levels compared to the controls. Notably, mushrooms stored in PP bags having nitrogen and stored in the refrigerator exhibited improved quality over eight days, showing better results in BI, moisture content, and texture. Res. Agric. Livest. Fish. Vol. 11, No. 1, April 2024: 53-60
农民负担得起的技术:用氮气(N2)包装延长新鲜杏鲍菇(Pleurotus ostreatus)的货架期
在孟加拉国,蘑菇的商业可行性面临挑战,因为蘑菇的呼吸速率高、含水量高,而且没有保护性的角质层结构,因此保质期很短。为了解决这个问题,人们探索了各种改善包装条件的方法。我们的研究重点是利用惰性气体氮来延长杏鲍菇的保质期。氮气作为一种惰性气体,被认为能确保新鲜蘑菇的质量。在我们的研究中,新鲜采收的蘑菇被小心翼翼地包装在聚丙烯(PP)袋中,其中既有氮气,也有不含氮气的。然后将其储存在室温和冰箱中。 在整个储存期间,每隔两天对七项质量指标的变化进行评估,包括总可溶性糖(TSS)、褐变指数(BI)、重量损失、pH 值、水分含量、气味和质地。结果表明,与对照组相比,总可溶性糖(TSS)和 pH 值没有明显变化。值得注意的是,用含有氮气的聚丙烯袋贮藏并在冰箱中贮藏八天后,蘑菇的质量有所改善,在褐变指数、水分含量和质地方面都有更好的表现。Res. Agric.Res. Agric.Fish.第 11 卷第 1 期,2024 年 4 月:53-60
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