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تاثیر تلفیقی اتمسفر تغییر یافته، دما و بسته بندی برخوصیات کیفی میوه خرمای رقم سایر | ||
| تحقیقات مهندسی صنایع غذایی | ||
| دوره 19، شماره 2 - شماره پیاپی 69، دی 1399، صفحه 143-158 اصل مقاله (700.49 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/fooder.2021.342269.1261 | ||
| نویسندگان | ||
| بهار راد1؛ مسعود لطیفیان* 2؛ احمد مستعان3؛ سارا احمدی زاده1 | ||
| 1موسسه تحقیقات علوم باغبانی، پیوهشکده خرما و میوه های گرمسیری | ||
| 2موسسه تحقیقات ug,l fhyfhkd | ||
| 3موسسه تحقییقات علوم باغبانی، پیوهشکده خرما و میوه های گرمسیری | ||
| چکیده | ||
| میوه خرما با گاز متیل بروماید ضدعفونی می‌شود که این کار از نظر قوانین بین‌المللی محدودیت دارد. در این پژوهش اثرهای تلفیقی اتمسفر تغییر یافته، حرارت و بسته‌بندی برای جایگزینی متیل بروماید با عاملی دیگر بررسی شد. تیمارهای اتمسفری با ترکیب 70، 80 و 90 درصد دی اکسید کربن و 90 درصد نیتروژن اجرا شد. بسته‌های تیمار دی اکسیدکربن در دمای 35، 40 و 45 درجه سلسیوس و تیمار نیتروژن در دمای 40 و 45 درجه سلسیوس به مدت 24 و 48 ساعت قرار داده شدند. صفات شامل pH، قند کل، رطوبت نسبی، درصد مواد جامد انحلال‌پذیر و آلودگی میوه اندازه‌گیری شد. نتایج بررسی‌ها نشان داد که بین تیمارها از نظر میانگین آلودگی در سطح احتمال (1 درصد) و قند کل، pH و درصد کل مواد جامد انحلال‌پذیر در سطح (5 درصد) تفاوت معنی‌دار وجود دارد. بیشترین مقدار قند کل در شرایط حداقل اکسیژن یعنی غلظت 90 درصد نیتروژن و دی اکسید کربن بود. بیشترین مقدار pH در بالاترین غلظت دی اکسید کربن و دما ثبت شد. در تیمارهای دی اکسید کربن با غلظت 90 درصد و دماهای 40 و 45 درجه سلسیوس، دی اکسید کربن با غلظت 80 درصد و دمای 45 درجه سلسیوس و نیتروژن با غلظت 90 درصد و دمای 45 درجه سلسیوس کنترل آفت 100 درصد بود. این پژوهش نشان داد که بسته‌بندی میوه‌های خرما با پلی‌اتیلن و تیمارهای با (CO290 درصد O2+ 5 درصد) و (N290 درصد O2+ 5 درصد) در دمای 45 درجه سلسیوس به مدت 24 ساعت برای ضدعفونی کردن خرما مناسب است. | ||
| کلیدواژه‌ها | ||
| پس از برداشت؛ شپشه دندانه‌دار؛ ضدعفونی کردن خرما؛ کنترل آفات؛ متیل برماید | ||
| عنوان مقاله [English] | ||
| Impact of Modified Atmosphere, Temperature and Packaging on the Quality of Date palm Fruit, Sayer cultivar | ||
| چکیده [English] | ||
| Disinfection of dry and semi-dry date palm cultivars are carried out with methyl bromide gas, but applying of this gas is restricted by international protocols. In this study, the combined effects of modified atmosphere, heat and packaging as a substitute for methyl bromide were investigated. The fruits were packed by vacuum packing machine. Atmospheric treatments were replaced with four combinations: 70%, 80% and 90% carbon dioxide and 90% nitrogen. The carbon dioxide treated packages were incubated at 35°C, 40°C and 45°C and the Nitrogen treated packages at 40°C and 45 °C for 24 and 48 hours, respectively. Traits including sugar content, relative humidity, soluble solids content and fruit pest infestation were measured. The results showed that there were significant differences between samples in terms of mean infestation by saw- toothed beetle at 1% probability level and for total sugar and total solids content at 5% probability level. The highest pH values were observed at the highest CO2 concentration in combination with the highest temperature. The pest control was completely done in samples treated with 90% carbon dioxide at temperature of 40°C and 45°C, 80% carbon dioxide at temperature of 45°C, and 90% nitrogen at temperature of 45°C. The results revealed that the placing of date fruits in polyethylene packages using (5%O2+90%CO2) and (5%O2+90%N2) treating at 45°C for 24 hours were suitable for disinfection of dates fruits. | ||
| کلیدواژه‌ها [English] | ||
| Disinfection of date palm, Methyl bromide, Pest control, Postharvest, Saw- toothed beetle | ||
| مراجع | ||
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