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1-MCP处理对不同采收成熟度‘徐香’猕猴桃保鲜效果的影响 总被引：2，自引：0，他引：2
以‘徐香’猕猴桃为试材,研究了4个采收期(盛花期后1301、381、46和154 d)1-MCP(1-甲基环丙烯)浓度为0.5μL/L处理24 h后,在(2±1)℃下贮藏后的保鲜效果。结果表明:1-MCP能够显著降低‘徐香’果实低温贮藏过程中呼吸速率、乙烯释放速率,延缓果实硬度、可滴定酸的下降以及可溶性固形物的上升;4个采收期的1-MCP处理果实出库后均能正常后熟,但品质和保鲜效果存在差异,其中Ⅱ、Ⅲ期处理果实在贮藏期结束时保持较高的硬度、可滴定酸和VC含量,并且110 d时失重和腐烂率较低;货架期末硬度、糖酸比相对较高,失重率和腐烂率较低。由此推断‘徐香’猕猴桃盛花期后138~146 d采收品质好,此时的1-MCP处理效果最佳。 相似文献
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以蓝莓果实为试材,研究了5kJ·m~(-2) UV-C、冰温贮藏(-2±0.5)℃及其联合处理对蓝莓果实采后贮藏期间呼吸强度、失重率、腐烂率、超氧化物歧化酶(SOD)活性、抗坏血酸过氧化物酶(APX)活性和苯丙氨酸解氨酶(PAL)活性的影响。结果表明:与对照组(未处理蓝莓果实)相比,各处理组均能有效抑制蓝莓呼吸强度、失重率和腐烂率的上升,提高SOD、APX和PAL活性。其中,5kJ·m~(-2) UV-C和冰温贮藏(-2±0.5)℃联合处理对蓝莓果实的保鲜效果更显著。 相似文献
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不同采收成熟度对椪柑采后贮藏性及品质的影响 总被引：1，自引：0，他引：1
《中国果菜》2017,(8)
为探明不同采收成熟度对椪柑采后贮藏性及品质的影响,本文对于2014年以7成熟与9成熟采收的果实进行了试验。结果表明:两种成熟度的椪柑,腐烂率、失重率、出汁率差异不显著;相比7成熟而言,9成熟采收的果实蔗糖含量显著升高,柠檬酸含量显著降低,但贮藏后期乙醇含量显著升高。因此,椪柑采收成熟度高有利于提高果实品质,适合春节前销售;适度早采的椪柑具有较好的贮藏品质,更容易长期低温贮藏,后期不易产生异味。 相似文献
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以芒果、木瓜、草莓和葡萄为试材,设置3个处理,分别为对照组1:壳聚糖和冰乙酸的混合溶液;对照组2:月桂酸甘油单脂、辛酸甘油单脂、丙二醇和吐温的混合液;试验组:微乳化混合液,研究了微乳化保鲜膜在(37±1)℃下对易腐水果保鲜效果的影响。结果表明:与对照组相比,微乳化壳聚糖涂膜处理可以有效地保持芒果、木瓜、草莓和葡萄的硬度,明显减少了腐烂率和失重率,保持了果实的贮藏品质,延长了果实的贮藏时间。 相似文献
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取八朔、宫内伊予柑、川野夏橙、森田脐橙、太田椪柑于采后7天内采用1℃(90％、95％R H)、5℃(93％、98％)、10℃(85％、95％)、15℃(73％、93％)、20℃(64％、92％)、及25℃(54％、88％)预贮处理,预贮处理后贮臧在5℃±0.5℃、88±5％R H的恒温室中,对其果实品质进行了分析。 1、预贮处理中的失重率,以高温、低湿区的失重较大,低温高湿区的失重较小。在5℃条件下,贮藏时的失重率,以高湿区预贮处理的失重率较小。贮藏结束时果实的失重率,不同的预贮条件下差异不林。预贮处理对果肉率、果汁率的影响不明显。 相似文献
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不同包装对火龙果低温贮藏品质的影响 总被引：1，自引：0，他引：1
《中国果树》2016,(5)
以海南‘大红2号'红肉火龙果为试材,在(5±0.5)℃条件下,2%CaCl_2+0.1%抑霉唑混合溶液浸泡5 min,风干后装入PE膜、PVC保鲜袋和硅窗气调袋内,研究不同包装处理对其贮藏品质的影响。结果表明,与对照相比,不同包装处理均能抑制火龙果腐烂和失重,抑制可溶性固形物、维生素C含量下降速度,维持果实品质,其中,保鲜剂结合硅窗气调包装处理保鲜效果最佳,贮藏至45 d无腐烂,失重率3.6%,较好地保持了果实商品价值,与对照相比延长贮藏期25 d。 相似文献
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壳聚糖涂膜对葡萄常温贮藏效果的影响 总被引：1，自引：0，他引：1
以大泽山葡萄果实为试材,采用浓度0.5%、1.0%、2.0%、4.0%的壳聚糖溶液浸泡果实l min,在室温下贮藏12 d,研究了壳聚糖涂膜处理对葡萄果实贮藏品质的影响。结果表明:与对照相比,4种壳聚糖涂膜处理均可不同程度降低果实的失重率和腐烂率,抑制果实贮藏后期可溶性固形物含量下降,保持果实较好的硬度。同时抑制呼吸作用,提高果实中抗氧化酶活性,延缓了果实的成熟衰老。其中1.0%壳聚糖涂膜处理的果实贮藏12 d,其腐烂率和失重率分别为12.8%和3.34%,而对照的分别是27.3%和6.46%,与对照的差异显著,果实品质好,保鲜效果最佳。 相似文献
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T. A. A. Nasrin M. A. Rahman M. A. Hossain M. N. Islam M. S. Arfin 《The Journal of Horticultural Science and Biotechnology》2017,92(6):598-605
Strawberries (Fragaria × ananassa Duch.) were coated either with chitosan (1, 1.5, and 2% solution, w/v) or aloe vera (AV) gel and the coatings were air dried. Coated strawberries were put in a polypropylene box and stored in refrigerator (6 ± 1°C and 50 ± 5% relative humidity. The success of coating in retaining the postharvest quality of the strawberries was evaluated by determining respiration rate, firmness, weight loss, external colour change, ascorbic acid content, total soluble solids, acidity, pH, microbial decay and sensory quality. The incidence of microbial rot started on day-6 in uncoated and 1% chitosan coated strawberries. Strawberries coated with 1.5 and 2% chitosan were affected by microbial decay on day-9 of storage. On the other hand, rot incidence was initiated in AV gel coated strawberries on day-15 of storage. Aloe vera gel or chitosan coating reduced respiration rate, weight loss, and microbial decay and preserved firmness, ascorbic acid content, and other quality parameters, thus delaying ripening and the progress of fruit decay due to senescence or microbial attack. Furthermore, AV gel delayed the changes in external colour and retained all other postharvest quality of strawberries compared to chitosan coated or uncoated ones throughout the storage. 相似文献
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Asghar Ramezanian Rahil Dadgar Fariborz Habibi 《International Journal of Fruit Science》2018,18(1):68-84
ABSTRACTTo evaluate the effects of preharvest foliar application of calcium chloride (CaCl2), potassium chloride (KCl), and salicylic acid (SA) on postharvest quantitative and qualitative attributes and storage life of “Washington navel” orange, an experiment was conducted during two consecutive years. Solutions including CaCl2 (1.5% and 3%), KCl (1.5% and 3%), SA (0.015%, 0.03% and 0.045%), and the combination of CaCl2, KCl, and SA were sprayed on the canopy at the end of the first stage of fruit growth one month after full bloom (fruit diameter was 20 mm) and repeated in late September. The fruits were harvested at commercial maturity stage and were stored at 5°C with 85 ± 5% relative humidity (RH) for 90 days. Quantitative and qualitative characteristics were assessed every month. Preharvest KCl treatment had no significant effect on measured parameters. However, CaCl2 and SA treatments had the most impact on the quantitative and qualitative characteristics, such as firmness and phenolic content of fruit during storage. The SA treatment enhanced fruit appearance and nutritional value compared to the control but could not prevent the weight loss during storage. The results showed that preharvest spray of CaCl2, KCl, SA, and their combination had positive effects on storability of “Washington navel” orange fruit during storage. However, the effect of Ca and SA was more. Application of Ca, K, and SA could be beneficial for orange postharvest instead of mixed elements fertilizers. 相似文献
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不同贮藏温度对双孢蘑菇采后品质的影响 总被引：1，自引：0，他引：1
研究不同贮藏温度对双孢蘑菇采后品质的影响。结果表明,低温贮藏环境可以抑制双孢蘑菇的水分丢失、感官品质下降、可溶性固形物含量降低和褐变等现象的发生。当相对湿度为95％时,双孢蘑菇较适宜的贮藏温度为0～5℃。 相似文献
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We determined the effect of different storage systems and packaging on the quality of ‘Sultana Seedless’ raisins. The fruit were packed in plastic boxes and kept under controlled atmosphere (1% O2 and 3% CO2) at 0°C and 75–85% RH for 12 months (CA), packed in vacuum bags and kept under normal atmosphere (21% O2–0.03% CO2) (NA) and packed in thin plastic bags + carton boxes and kept under ambient condition (semi-refrigeration), at 0°C and 90% ± 5 RH for 12 months (AC). Fruit kept under CA or NA had acceptable fruit quality in terms of general appearance and taste for 10 months, whereas fruit quality was unacceptable at that time under AC. Fruit under NA had less weight loss than fruit under the other conditions. Differences in skin colour were relatively small, apart from the h° values. Concentrations of ochratoxin A were generally higher with AC. External appearance and taste were better with CA and NA. As a result, raisins can be stored for 10 months with good quality in vacuum package in NA (0°C and 90% ± 5 RH) and CA (1% O2–3% CO2) at 0°C and 75–85% RH. 相似文献
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地衣芽孢杆菌W10及其抗菌蛋白对桃褐腐病的抑制作用 总被引：1，自引：0，他引：1
地衣芽孢杆菌菌株W10菌液及其产生的抗菌蛋白对贮藏期桃褐腐病都有较好的抑制作用,高浓度（1 × 1010 cfu · mL-1菌液,3.0 mg · mL-1抗菌蛋白）效果更好。在较低温度（4 ℃）和湿度（RH70% ~ 75%）条件下,高浓度菌液和抗菌蛋白在病菌定殖前处理桃果能收到较好的防病效果。钙离子[0.1% Ca(NO3)2]能提高W10菌液及抗菌蛋白对桃果实褐腐病的防治效果,能明显推迟始病时间。W10菌液和抗菌蛋白浸果处理能显著降低贮藏期的自然腐烂率,与多菌灵效果类似;通过对果肉色差L*值、果实硬度、可溶性固形物含量、失重率等品质指标参数的测定,发现菌液和抗菌蛋白处理均不会影响果实品质。 相似文献
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高氧处理对杨梅果实采后腐烂和品质的影响 总被引：11，自引：1，他引：11
研究了40%、60%、80%和100% O2 和空气气流连续处理对‘大乌’杨梅在5℃, 12 d贮藏期间腐烂和主要品质指标变化的影响。结果表明, 高氧处理对果实总酸、可溶性固形物、还原糖含量及pH值无明显影响; 但60% ～100% O2 处理可显著抑制果实贮藏期间的腐烂, 且O2 浓度越高, 果实腐烂越低,以100% O2 处理的作用最大。60% ～100% O2 处理还可以显著抑制果实失重率、花青素和丙二醛含量的增加, 保持较高的维生素C含量。结果表明, 高氧处理在杨梅果实采后贮运保鲜中具有潜在的应用前景。 相似文献
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以超市主要销售的8种蔬菜为试材,研究不同湿度对不同种类蔬菜货架质量的影响。结果表明:在模拟超市的室温条件下,12h货架期内,加湿处理极显著地降低了蔬菜的失重率,有效保证了蔬菜的新鲜度,其中,相对湿度90%处理的保鲜效果最好;蔬菜种类不同失重率表现出极显著的差异,聚类分析表明,8种蔬菜中,普通白菜、青花菜为易失重类蔬菜,其次为胡萝卜,结球莴苣、黄瓜、菜豆为轻微失重类蔬菜,甘蓝、大白菜为不易失重类蔬菜;超市室温不包装状况下,普通白菜、青花菜的适宜加湿条件为相对湿度90%,胡萝卜、菜豆、结球莴苣、黄瓜的适宜加湿条件为相对湿度80%,甘蓝、大白菜可在不加湿条件下进行货架销售。 相似文献
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采后操作对荔枝果实品质、失水与呼吸的影响 总被引：2，自引：0，他引：2
探讨了98℃热水处理、熏硫及结合酸浸等技术、包装方式与贮藏条件对‘黑叶’荔枝果实品质、失重与呼吸作用的影响。结果表明：热浸、熏硫结合酸浸处理可提高果皮酸度,对果肉可溶性固形物含量与酸度无影响;无包装自然放置与有孔或无孔塑料盒包装相比,无孔塑料盒包装的果实失重显著减缓;贮藏于4℃的热处理果实与对照果实有相似的失重曲线;无论包装方式与贮藏环境的温湿度如何,果实均不存在呼吸高峰;呼吸速率在贮藏初期随着果实失重的增加而下降,后期变化趋于平稳。 相似文献