تعیین شرایط مناسب نگهداری گیاه سالیکورنیای تازه

نویسندگان
1 اعضای هیأت علمی مؤسسه تحقیقات فنی و مهندسی کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران
2 عضو هیأت علمی پژوهشگاه بیوتکنولوژی کشاورزی ایران، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران
چکیده
گیاه سالیکورنیا با نیاز آبی ‌کم و مقاوم به خشکی و شوری، یکی از گیاهان هالوفیت (شوری­ پسند) است که به ­خوبی در اراضی شور با درصد نمک بالا رشد می­ کند و منبع مهمی از ترکیبات غذایی، ویتامین‏ها و همچنین آنتی­ اکسیدان‏ها است. به­ دلیل ساختار ویژه فیزیولوژیکی این گیاه، فساد سریع آن در مراحل پس از برداشت، سبب تخریب و کاهش ارزش­های تغذیه­ ای آن شده و ضایعات پس از برداشت این گیاه را افزایش می­دهد. به همین دلیل به­ کارگیری تیمارهای مناسب پس از برداشت به­ منظور افزایش قابلیت ماندگاری و حفظ ارزش­های تغذیه ­ای این گیاه ضروری می­ باشد. از آنجا که تاکنون تحقیقات جامعی در راستای فناوری­های پس از برداشت سالیکورنیا به­ منظور افزایش عمر ماندگاری و حفظ کیفیت تازه­ خوری آن انجام نشده­ است لذا همگام با توسعه کشت و تولید این گیاه در مناطق مختلف کشور، این پژوهش با هدف بررسی و معرفی مناسب­ترین شرایط نگهداری این گیاه انجام شد. نگهداری محصول در شرایط محیط (دمای oC25) نشان داد که سالیکورنیای تازه تا مدت حداکثر 3 روز از ظاهر و بازارپسندی مناسب برخوردار می­ باشد. نتایج ارزیابی وضعیت ظاهری سالیکورنیا و میزان افت وزن آن در مدت نگهداری نشان داد که در شرایط سردخانه (دمای oC 4) و رطوبت نسبی کنترل شده (90 تا 95 درصد)، ویژگی­های ظاهری، فیزیکوشیمیایی و در نتیجه بازارپسندی سالیکورنیا در مقایسه با دما و شرایط محیط بهتر حفظ شده و میزان افت وزن محصول نیز کمتر بود. تاثیر مدت زمان نگهداری، دما و نیز اثر متقابل آن­ها بر افت وزن گیاه سالیکورنیا معنی ­دار (0/001P<) بود. علاوه بر این، به غیر از اسیدیته، مدت زمان نگهداری بر میزان رطوبت، شدت تنفس، شوری و pH گیاه اثر معنی­ داری (0/001P<) داشت.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Determination of suitable storage conditions for fresh salicornia

نویسندگان English

Adel Mirmajidi Hashtjin 1
Reza Famil Momen 1
Nayyer Azam Khoshkholgh Sima 2
1 Agricultural Engineering Research Institute
2 Agricultural Biotechnology Research Institute of Iran
چکیده English

Salicornia with low water requirement and resistant to drought and salinity is one of the halophyte plants that grows well in saline areas with high salinity and is an important source of nutrients, vitamins and antioxidants. Due to the physiological structure of this plant, its rapid deterioration at post-harvest stages causes the destruction and degradation of its nutritional value and increases the post-harvest losses of this plant. Therefore, it is necessary to use appropriate post harvest treatments in order to increase the shelf-life and maintain the nutritional values of this plant. Since there has been no comprehensive research on the post harvest technologies of Salicornia, in order to increase the shelf-life and fresh quality of the product, so, simultaneously with the development of cultivation and production of this plant in different parts of the country, this study was carried out with the aim of investigating and introduction of the most appropriate storage conditions of this plant. Product storage at ambient temperature (25°C) showed that fresh salicornia had a good appearance and marketability only for up to 3 days. Evaluation of the appearance of salicornia and its weight loss during storage showed that at low temperature (4°C) and suitable relative humidity (90 to 95%), in comparison with temperature and environmental conditions, the apparent, physicochemical and, as a result, salicornia marketability, was better preserved and the product weight loss was lower. The effects of storage time, temperature and their interaction on Salicornia plant weight loss were significant (P<0.001). Furthermore, except for acidity, storage time had a significant effect (P<0.001) on moisture content, respiration rate, salinity and pH of the plant.

کلیدواژه‌ها English

Salicornia
packaging
Cold storage
Storage conditions
Physico-chemical properties
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