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Register a new userChanges of Quality of Japanese persimmon Fruits Var (Hachiya) Treated with 1-Methelcyclopropene (1-MCP) during cold storage
تغيرات جودة ثمار الكاكي الياباني صنف (Hachiya) المعاملة بمركب 1-MCP أثناء التخزين المبرد
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Tishreen University ورقة بحثية
Publication date
2015
fields
Food Sciences
and research's language is
العربية
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Shamra Editor
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نفذ هذا البحث لتحديد مدى أهمية استخدام مادة 1-MCP في إطالة العمر التخزيني لثمار الكاكي الياباني صنف "Hachiya" ، مع المحافظة على جودتها. تمت المعاملة بعد القطاف مباشرة بثلاثة تراكيز (0.5 ، 1 ، 1.5) ppm من مادة 1-MCP على درجة حرارة 20مْ لمدة 24 ساعة، ثم خزنت الثمار لمدة ستة أشهر ضن ظروف تخزينية ثابتة على درجة حرارة 2 مْ و رطوبة نسبية 85%. تم و بشكل دوري (كل شهر) أخذ عينات من ثمار كل معاملة لمعرفة التغيرات التي طرأت على مكوناتها خلال فترة التخزين. أظهرت النتائج أن الثمار المعاملة بمادة 1-MCP حافظت على قيم أعلى من الصلابة مقارنة مع ثمار الشاهد، كما قل الفقد بالوزن بشكل واضح بالنسبة لهذه الثمار خلال فترة التخزين. حدثت تغيرات في محتوى الثمار من فيتامن VC، الحموضة الكلية TA، لكن كل هذه التغيرات كانت منخفضة بشكل واضح في الثمار المعاملة بمادة 1-MCP , مقارنة مع ثمار الشاهد. تدل هذه النتائج على أن مادة 1-MCP مادة فعالة في إطالة العمر التخزيني (عمر الرف) لثمار الكاكي الياباني صنف "Hachiya".
This research carried out to estimate the importance of use of 1-MCP in increasing shelf life of Japanese persimmon ,var (Hachiya) , and maintaining fruits quality. The fruits were treated with different concentrations of 1-MCP (0.5-1-1.5) ppm soonly after harvest at 20Cᵒ during 24 h, then stored for 6 months at controlled conditions (2Cᵒ and 85% of relative humidity). The samples were taken periodically (every month) to study the changes in fruits composition during storage period. The results showed that treatment with 1-MCP keeps fruits at higher degree of firmness compared to the control, and decreased the loss in weight at storage period.The treatment with 1-MCP decreased as well the changes in the fruits composition of Vitamine c, total acidity (TA) compared to the control. These results indicate that treatment with 1-MCP is effective in increasing shelf-life of Japanese persimmon fruits var (Hachiya).
References used
(BESADA, C; ARNA, L; SALVADOR, A. Improving storability of persimmon cv. Rojo Brillante by combined use of preharvest and postharvest treatments. Postharvest Biology and Technology 50, (2008), (169-175
(BOWER, J.H ؛ BIASI,W.V ؛MITCHAM,E.J. Effects of Etylene and 1-MCP on the Quality & Storage Life of Stawberries. Postharvest Biology and Technology 28, (2002), (417-423
(CLINE, J. MCP - Perhaps an Alternative to CA Storage. Canadian Fruitgrower 54(4):16, (1988
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تأثير موعد الجني والمعاملة بمادة 1- ميتيل سايكلو بروبان (1-MCP ) في جودة ثمار الكاكي صنف ( Hachiya ) أثناء التخزين المبرد
The effect of 1-MCP, CaCl2 and CaCl2 + 1-MCP treatments on the
respiration and ethylene production of ‘Cox’s Orange Pippin’ apples was
investigated. Treatments were applied at harvest and apples stored under air
storage (3°C or 10°C) for 0, 2, 4,
6, 8 and 10 weeks. At storage removal apples
were held at 20°C for 7 days shelf-life and respiration and ethylene production
measured. The CO2 rate in the CaCl2 and CaCl2 + 1-MCP treatments was
significantly lower than either the CaCl2 treatment or untreated control. The
CO2 rate reduced steadily during shelf-life especially for the 3°C stored fruit. A
significant effect of storage temperature on the CO2 rate during shelf-life could
not be determined. Application of 1-MCP or CaCl2+1-MCP decreased
significantly ethylene production during shelf-life at all storage periods.
نفذ البحث خلال الفترة 2013-2016 م في كلية الزراعة بجامعة دمشق , بهدف دراسة تأثير المعاملة ببعض المواد الكيميائية والطبيعية ( 1- ميثيل سكلو بروبان , ونتروبروسيد الصوديوم , الشيتوزان , وأمينوفينل علايسين , والميثيل جاسمونات , وفيتامين E ) في القدرة الت
خزينية لثمار البندورة ( الهجين Tala ) وصفاتها البيوكيميائية ( نسبة المواد الصلبة الذائبة TSS ونسبة الحموضة القاتلة للمعايرة TA ) والفيزيائية ( الصلابة ونسبة الفقد بالوزن والفقد المطلق ومؤشرات اللون ) ومعايير الأكسدة ومضادات الأكسدة .
Grape Vitis Vinifera L. var. "Baladi" was fumigated with acetic acid at two
concentrations 75 and 100 %, during two successive seasons 2008/2009, to study
their effect comparing of sulfur dioxide pads and control. However, Sulfur
dioxide pads were
packed in 40 μm polyethylene bags thickness at two
concentrations 1 and 1.5 g/ kg fruit. All treatments were stored at 0 ± 1 Cº and
90-95% RH for three months, in cooling units of pome and vine research
department in Swaida. Chemical and physical properties were assessed every
15 days intervals, and in every time shelf life was measured for three days at
room temperature and calculated as total loss %. Acetic acid treatment effected
as well as or better than sulfur dioxide pads during cold storage. Which, acetic
acid fumigation decreased weight loss %, decay % and berry shatter %,
moreover, berry adherence strength (g) and berry firmness (kg/cm2) were
increased, but T.S.S %, total acidity % and sugars % have not significant
differences comparing to sulfur dioxide fumigation and control. In addition to
that, the application of acetic acid increased shelf life in days by decreasing
total loss %; also this treatment improved some sensory properties and was
satisfied for consumer demand.
This study was conducted on European grape Vitis Vinifera L. Var.
Helwani, for grape vine in full bearing. Fruit were picked, during two harvest
dates and for three treatments (pre-cooling directly- pre-cooling after 12 h and
without pre-cooling).
A 1×1×1 m pre-cooling chamber was designed (cooling
efficiency 125 kg\ m3) based on iced water and pumped stream air. In addition
to that, we used boxes. Then handled fruit were transferred to the storage units
at 0±1Cо and 90-95% RH for two months. The initial and monthly
measurements for weight loss%, decay%, ripening indicator, firmness kg/cm2
and total soluble solids TSS % were done. The study showed significant effect
of directly application of pre-cooling treatment on decreasing weight loss
0.508% and decay 0.591%.
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