共查询到18条相似文献,搜索用时 78 毫秒
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豇豆在我国各地广泛种植,属于消费量较高的豆类蔬菜。其营养丰富,富含蛋白质、碳水化合物、维生素和矿物质元素,经济价值较高。但是,豇豆属于季节性蔬菜,销售具有季节性和区域性的限制,又因果荚组织幼嫩、呼吸强度很高,采后极易产生成熟衰老、锈斑化、冷害等问题,导致品质降低、营养成分流失、腐烂变质,严重影响食用价值。保鲜技术的应用可以对豇豆采后的营养品质、感官品质、酶活性等起到一定的作用,达到保持豇豆良好品质风味、延长货架期的目的。因此,该研究从物理保鲜技术、化学保鲜技术两个方面对豇豆的采后保鲜研究进行了总结,旨在为豇豆采后贮藏保鲜技术研究提供理论参考,缓解局部产量过剩、供过于求的局面,改变豇豆采后保鲜的现状。 相似文献
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竹笋作为一种高纤维、高蛋白、低脂肪、低糖的绿色森林蔬菜,越来越受大众喜爱。但是竹笋的采收季节集中,采后代谢旺盛,在运输和贮藏的过程中极易腐烂老化,由此导致竹笋的营养价值和商业价值大大降低。本文首先介绍我国可食用竹笋口感、形态、产地、采收期,然后从采后竹笋的外观品质、呼吸作用、蒸腾作用、木质化等方面阐述竹笋采后生理生化变化,并详细综述国内外不同保鲜方法(传统保鲜、物理保鲜、化学保鲜和生物保鲜)在竹笋贮藏保鲜上的应用,以期为基于竹笋采后生理生化变化开发新型贮藏保鲜技术提供参考。 相似文献
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柠檬烯乳化液对杏采后保鲜效果的影响 总被引:1,自引:0,他引:1
用柠檬烯复合液浸泡杏3min后,研究柠檬烯乳化液对杏贮藏期间各项营养指标的影响。结果表明,与对照相比,各处理均能明显地抑制杏的腐烂变质,减缓杏维生素C、可溶性固形物、可滴定酸的消耗和分解,延缓杏采后生理变化,减少营养物质的损失,保持杏的贮藏品质,延长贮藏期,提高其耐贮藏性。 相似文献
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玉米属于全谷物范畴,兼具粮和果两类食物特性,富含蛋白质、淀粉、果糖以及多种矿物质等。随着人民生活水平的提升,消费者们对玉米口感和品质的要求进一步提升。鲜食玉米则因其甜、香、糯以及营养价值高等特点备受人们青睐。目前,我国鲜食玉米总种植面积高居全球第一。但鲜食玉米采收具有季节性,并且采后呼吸旺盛,采后贮藏过程中易发生褐变、霉变、虫害、苞叶变黄以及甜度下降等品质劣变问题,进而影响其食用价值和经济价值。保鲜技术的应用能够有效降低鲜食玉米采后呼吸强度以及营养物质的流失,维持鲜食玉米的感官品质、酶活性和芳香物质含量。因此,本文对鲜食玉米采后品质劣变问题和保鲜技术2个方面进行详细阐述,旨在为鲜食玉米采后贮藏保鲜技术研究提供理论参考。 相似文献
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芦笋嫩茎采后生理和品质变化及保鲜技术 总被引:14,自引:1,他引:14
介绍了芦笋嫩茎采后的生理和品质变化以及嫩茎预冷、冷藏、人工调节气体 (CA)贮藏、自发气调 (MA)贮藏、γ 辐照处理和其他贮藏保鲜技术研究进展。 相似文献
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目的:提高杏脯的干燥效率及产品品质。方法:分别用转盘式微波炉(RMD)和微波对流耦合干燥机(MCD)干燥杏脯,考察微波功率、微波发射方式、切分程度及物料是否转动对杏脯干燥特性、焦化率、色值、感官品质及复水特性的影响,并与传统热风干燥(HD)进行比较。结果:与HD的1 040 min(16块)和840 min(48块)相比,微波干燥显著缩短干燥时间,不同微波干燥条件下所需的干燥时间为40~400 min;脉冲比越大或功率越高或物料尺寸越大,干燥所用时间越短,在MCD中控温微波干燥耗时最长。无论是在RMD还是不控温MCD中静态干燥,杏脯均出现严重的烧焦现象,焦化率为17%~100%,物料转动时焦化率高于静态干燥的,而在MCD中控温静态干燥避免了物料的烧焦现象,且MCD中控温静态干燥的杏脯色值和感官评价最接近HD的,复水比与HD仅相差3.45%~5.17%,获得最高的感官评价分(87.2分)。结论:MCD中控温静态干燥可以作为杏脯的高效干燥方法。 相似文献
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不同品种橄榄的采后营养品质比较 总被引:1,自引:0,他引:1
为比较不同品种橄榄果实的采后贮藏效果,以粤东地区常见的橄榄品种:下院、丁香、香种为试材,于常温下贮藏9d,每天测定果实的外观品质、含水量、失重率和营养品质(可溶性固形物、Vc、蛋白质、有机酸等含量)的变化。结果表明:3个品种贮后7d,外观品质明显下降,品种间差异不大,平均好果率为34.7%,平均含水量为73.5%,平均失重率为31.1%;总体感官评价,前期鲜食以下院最好、丁香最差,后期以香种最好、下院最差;Vc含量变化差异显著,以丁香降幅最大(84.44%),下院降幅最小(61.40%),可溶性固形物含量均呈上升趋势,平均上升5.89%,蛋白质和有机酸含量则呈下降趋势,降幅为18.25%和0.81%,品种间差异不显著。 相似文献
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柠檬烯乳化液对青椒采后生理和贮藏品质的影响 总被引:1,自引:0,他引:1
用柠檬烯乳化液浸泡青椒3min,研究柠檬烯对青椒采后生理和贮藏品质的影响。结果表明,供试浓度的柠檬烯乳化液浸泡处理对青椒的腐烂有明显的抑制作用,贮藏期内柠檬烯乳化液处理组腐烂率较对照组低30%(p<0.01);对青椒的细胞膜系统有保护作用,贮藏第6、12d,对照组细胞膜受损程度分别是柠檬烯乳化液处理组的2.103倍和1.329倍(p<0.01);可以减缓青椒中维生素C、叶绿素、可滴定酸的消耗和分解,贮藏期内柠檬烯乳化液处理组含量均极显著地高于对照组(p<0.01);柠檬烯乳化液处理对青椒中的可溶性蛋白质、可溶性固形物也有一定的保留作用,但含量与对照组相比未达到极显著(p>0.01)。柠檬烯乳化液可以有效延缓青椒的采后生理变化,保持青椒的品质,提高其耐贮藏性。 相似文献
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Shankar Subramaniam Shunshan Jiao Zhentao Zhang Pu Jing 《Comprehensive Reviews in Food Science and Food Safety》2021,20(3):2560-2595
Shiitake mushrooms are one of the most popular and highly consumed mushrooms worldwide both in fresh and dry forms. However, it rapidly starts losing its quality immediately after harvest which necessitates processing and/or proper storage before being distributed. However, the processes used for preserving other mushrooms (e.g., Agaricus) become unviable for shiitake due to its uniqueness (higher respiration rate, varied biochemicals, growth, etc.) which demands individual studies on shiitake. This review starts by listing the factors and their interdependence leading to a quality decline in shiitake after harvest. Understanding well about these factors, numerous post-harvest operations preserve shiitake as fresh form for a shorter period and as dried forms for a longer shelf-life. These processes also affect the intrinsic quality and nutrients of shiitake. This review comprehensively summarizes and discusses the effects of chemical processing (washing, fumigation, coating, and ozone), modified atmosphere packaging (including irradiation) on the quality of fresh shiitake while discussing their efficiency in extending their shelf-life by inhibiting microbial spoilage and deterioration in quality including texture, appearance, nutrients, and favor. It also reviews the impact of thermal dehydration on the quality of dried shiitake mushrooms, especially the acquired unique textural, nutritional, and aromatic properties along with their merits and limitations. Since shiitake are preferred to be low-cost consumer products, the applicability of freeze-drying and sophisticated novel methodologies, which prove to be expensive and/or complex, are discussed. The review also outlines the challenges and proposes the subsequent future directives, which either retains/enhances the desirable quality in shiitake mushrooms. 相似文献
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Ali Levent Coşkun Meltem Türkyılmaz Özge Turfan Aksu Betül Erkan Koç Oktay Yemiş Mehmet Özkan 《Food chemistry》2013
The effects of different sulphuring methods, i.e. sulphuring by “burning the elemental sulphites (BES),” “SO2 gas from liquified SO2 tank (SG)” and “dipping into sodium metabisulphite solution (DSM)” on the colour (brown colour formation and carotenoid degradation) and the loss of SO2 in apricots from Hac?halilo?lu and Kabaa?? varieties stored at 5, 20 and 30 °C for a year were investigated. There were significant effects of variety, sulphuring method and especially storage at 30 °C on the brown colour formation and loss of SO2 (P < 0.05). As storage temperature–time increased, β-carotene content decreased. Sulphuring methods and variety did not show significant effect on β-carotene content (P > 0.05). The changes in L∗, b∗ and C∗ values were directly associated with β-carotene content and browning values. The most suitable method for all samples, except for Hac?halilo?lu variety stored at 30 °C (BES), is SG, because the samples retained their attractive golden yellow colour during storage. 相似文献