کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4566735 1628822 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Combined effects of ascorbic acid and chitosan on the quality maintenance and shelf life of plums
ترجمه فارسی عنوان
اثرات ترکیبی اسید آسکوربیک و کیتوزان بر کیفیت نگهداری و عمر مفید آلو
کلمات کلیدی
آلو، پوشش کیتوزان، اسید اسکوربیک، پس انداز ذخیره سازی، عمر مفید
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش باغداری
چکیده انگلیسی


• A combination treatment of CTS and AsA maintained firmness in plums.
• A combination treatment of CTS and AsA reduced respiration rates and decreased color changes in plums.
• The inhibition of softening was associated with decreased PME and PG activities.
• Anthocyanin synthesis was inhibited with the combination of AsA and CTS.
• A combination treatment of CTS and AsA has the potential to maintain fruit quality.

The combined effects of chitosan (CTS) and ascorbic acid (AsA) on the quality maintenance and shelf life of harvested plums (Prunus salicina Lindley. cv. ‘Sanhuali’) were investigated. The fruits were treated with aqueous solutions including water (control), 40.0 mM AsA, 1.0% CTS, and 40.0 mM AsA combined with 1.0% CTS; all samples were stored at 5 ± 1 °C and 90 ± 5% relative humidity for 20 days. Fruit firmness, weight loss, respiration rate, soluble solids content, titratable acidity, ascorbic acid, color characteristics (L*, C*, and h°), and anthocyanin contents were measured, along with the specific activities for superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), polyphenol oxidase (POD), polygalacturonase (PG), pectin methylesterase (PME), and phenylalanine ammonia lyase (PAL). The results showed that AsA and CTS combined maintained tissue firmness, inhibited an increased respiration rate, and decreased color changes, as compared with the control. The efficiency was better for the combined AsA and CTS treatment than AsA or CTS alone. The inhibition of softening was associated with decreased PME and PG activities. Furthermore, plums treated with the AsA and CTS combination also exhibited a significantly lower PPO activity and significantly higher SOD, POD, and CAT activities throughout the storage period. During postharvest storage, anthocyanin synthesis was significantly inhibited with the combination of AsA and CTS and was accompanied by decreased PAL activity. Moreover, the production of superoxide free radicals (O2−) and malondialdehyde (MDA) was significantly decreased in the treated fruits. These results clearly indicated that the 40.0 mM AsA and 1.0% CTS treatment could be an effective means to contribute to the shelf-life extension and quality maintenance of plums during storage.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scientia Horticulturae - Volume 176, 11 September 2014, Pages 45–53
نویسندگان
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