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香菇真空冷冻干燥工艺的研究 总被引:9,自引:0,他引:9
本文介绍了香菇等食用菌的最好保鲜技术——真空冷冻干燥技术的原理、加工工艺和加工时的注意事项。并通过冻干香菇和传统干燥香菇的理化指标的测定,进一步证实了冻干工艺的优越性。 相似文献
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微纳米气泡(micro-nano-bubbles,MNBs)技术具有比表面积大、气体溶解能力强、表面带有Zeta 电位等特性,在环境治理、清洗、生物医学及农业等领域具有较强研究意义和应用前景。微纳米气泡技术与臭氧(O3)、二氧化碳(CO2)、1- 甲基环丙烯(1-MCP)等气体结合可用于果蔬采后非化学洗涤与保鲜,其中臭氧微纳米气泡、二氧化碳微纳米气泡处理通过减少有害微生物数量达到保鲜目的,1-MCP 微纳米气泡通过抑制乙烯生成延长果蔬保鲜期。本文综述了微纳米气泡技术的研究进展及其在果蔬采后的应用,以期为后续推广应用提供理论依据。 相似文献
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随着人们对于美好生活的需求不断提高,鲜切花也越来越受到人们的欣赏与青睐,但鲜切花的保鲜是鲜切花能否普及应用的关键。本研究从影响鲜切花衰败的因素出发,对常用鲜切花保鲜技术(即化学保鲜技术、物理保鲜技术以及生物保鲜技术)以及常用切花种类进行了论述,旨在为今后鲜切花的广泛使用及保鲜技术进一步研究奠定一定的理论基础。 相似文献
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微生物素在果蔬采后保鲜中有重要的应用价值,但目前实际应用在果蔬采后保鲜领域中的并不多。本文分析了目前已经应用到果蔬保鲜领域的微生物素种类,有乳酸链球菌肽、溶菌酶、木霉发酵液等,分析了其抑菌保鲜原理及研究现状;并结合微生物素的特点,提出了微生物素在未来果蔬采后保鲜中的发展趋势,即面对冷藏技术使用不完善的现象,可以开发利用更多的微生物素种类,如纳他霉素、红曲霉素、短梗霉多糖等,为今后果蔬采后保鲜领域的健康可持续发展提供参考。 相似文献
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鲜切水果作为一个新兴行业,近些年开始快速发展,本文对鲜切水果的加工工艺进行了介绍,探讨了影响鲜切水果保鲜的主要因素,如生理生化反应和微生物污染等,并总结了鲜切水果常见的几种保鲜方法,包括低温冷藏保鲜、气调保鲜、涂膜保鲜等,并对鲜切水果保鲜技术的发展趋势进行了展望。 相似文献
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消息中国食用菌商务网 《中国果菜》2015,(2):10
如果一条"冰冻鱼"放入常温水中又能慢慢游动起来,您是否觉得很神奇呢?北京四季大通农业发展有限公司研究院研发的"鲜冻"技术就让这样的"想象"变成了现实。把"冰冻鱼"变活鱼的技术是该研究院研发的"鲜冻保鲜"技术。这种技术是利用动植物冬眠、休眠时体细胞分泌多糖物质"以冻抗冻"以保持生命体的机理,解决了传统冷冻导致的细胞膜破坏、口感变差、营养 相似文献
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R. M. Brennan B. A. Goodman J. A. Chudek 《The Journal of Horticultural Science and Biotechnology》2013,88(6):919-924
Experiments are described in which the technique of nuclear magnetic resonance (NMR) microimaging is used to observe in vivo freezing induced damage to flowers to Ribes nigrum. An increase in the free water signal in the stylar and ovular regions of the flowers was observed after freezing, as a result of tissue disruption in these areas. 相似文献
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Stefano Mancuso Francesco Paolo Nicese Elisa Azzarello 《The Journal of Horticultural Science and Biotechnology》2013,88(5):610-616
SummaryAn image analysis method, based on the calculation of the fractal spectrum of leaf colour, was evaluated for its potential use in assessing frost hardiness in plants. The technique developed consisted of a) digitization of the leaves after freezing treatments, b) splitting of the images obtained into the three components of the RGB (red, green and blue) colour system and c) calculation of the fractal spectrum for each colour component of the leaf. It was then tested to assess the freezing hardiness of acclimated and non-acclimated Callistemon linearis plants. The analysis system consisted of a scanning device, a personal computer and the image analysis algorithm. All the fractal parameters showed a sigmoidal relationship with temperature. From the inflection point, the LT50 calculated for acclimated and non-acclimated plants, was –7.5 and –4.8°C, respectively. The LT50 calculated from the electrolyte leakage test on the same material was about 2°C warmer than the LT50 obtained from fractal analysis. The role of fractal analysis of leaf colour as an additional, rapid and inexpensive method for identifying freezing damage is discussed. 相似文献
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R Nestby R. Bjørgum A. Nes T. Wikdahl B. Hageberg 《The Journal of Horticultural Science and Biotechnology》2013,88(3):280-285
SummaryThe study was conducted in two experiments, one examining the effects of alternate freezing and thawing at –12?C for 2 h and +6#x02DA;C for 24 h, and the other examining the effects of permanent freezing for 1 or 15 d at+12?C. In both experiments the plants were grown in the pre-fruiting period at a coastal or a continental location in Norway. The freezing injury increased the higher the stress, indicated by reduced growth, fruit size and yield.It was shown that ‘Korona’ was the most hardy cultivar at a short period of freezing stress and at alternate freezing and thawing, while ‘Senga Sengana’ was more freezing tolerant at long-term permanent freezing than ‘Bounty’ and ‘Korona.’ In general the results indicate that the plants induce freezing tolerance according to some factor of origin, since plants grown in the continental climate were better able to survive long-termpermanent freezing than plants grown in a coastal climate, and plants grown in a coastal climate were better able to survive alternate freezing and thawing than plants grown in a continental climate. 相似文献
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为探究香樟Cc CBFb基因增强植株非生物胁迫抗性的功能,通过农杆菌介导法将该基因转入烟草中,经PCR和半定量RT-PCR技术鉴定阳性转基因株系后,对获得的T1代转基因无性系(T2和T4株系)以及野生型(WT)进行干旱(0、150、300和450 mmol·L~(-1)的甘露醇)、高盐(0、100、200和300 mmol·L~(-1)的Na Cl)、4℃低温、–4℃冰冻胁迫处理,结果显示:转基因烟草在干旱和高盐胁迫下,幼苗的存活率均高于野生型;经4℃低温处理后,转基因烟草植株的脯氨酸和可溶性糖含量均显著高于野生型植株,而丙二醛(MDA)含量均低于野生型植株;经–4℃的冰冻处理6 h后,野生型和转基因T4株系植株叶片均出现不同程度的萎蔫,而转基因T2株系植株未出现不良现象。由此可见,过表达CcCBFb基因不但能够增强烟草的抗旱和抗盐性,而且能够显著增强抗寒性。 相似文献
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设置系列冷冻温度和处理时间开展南方红豆杉种子冷冻催芽试验,结果表明:南方红豆杉种子经冷冻处理,于4月份气温升高后播种,约25d种子即可萌发;在-20~-15℃条件下,冷冻处理30d即达最佳效果,其萌发率在75%以上。 相似文献
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