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采用壳聚糖、明胶、甘油制备不同配比的壳聚糖-明胶复合涂膜保鲜液,对南果梨进行涂膜处理,在室温下进行贮藏,通过对果实的失质量率、硬度、可溶性固形物和VC含量的测定,评价壳聚糖-明胶复合涂膜保鲜液对南果梨的保鲜效果。结果表明,壳聚糖-明胶复合涂膜液可以降低果实的失质量率,减缓硬度的下降速率,维持可溶性固形物和VC的含量,保鲜效果显著。保鲜效果最佳的涂膜保鲜液配比为壳聚糖0.9%,明胶1.25%,甘油0.4%。在此条件下,南国梨的保鲜期可延长至20 d左右。 相似文献
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研究纳米材料复合涂膜用于新鲜鸡蛋的保鲜效果。采用纳米SiO2溶液、壳聚糖溶液、纳米SiO2与壳聚糖的复合溶液对鸡蛋进行涂膜保鲜试验,在35 d的贮藏期间,对鸡蛋各项感官指标和内部品质指标变化进行分析。结果表明,当贮藏35 d时,3种处理对鸡蛋的保鲜效果均优于空白对照组。其中纳米SiO2与壳聚糖的复合涂膜效果次于壳聚糖涂膜效果,优于单独使用纳米SiO2涂膜和空白对照组。纳米SiO2涂膜贮藏至35 d时,感官表现为近似散黄但未散黄,质量损失率为4.98%,哈夫单位为58,蛋黄比率为24.3%,蛋黄系数0.25,蛋清pH值为9.2。纳米SiO2与壳聚糖复合溶液对新鲜鸡蛋具有较明显的保鲜作用。 相似文献
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研究纳米材料复合涂膜用于新鲜鸡蛋的保鲜效果。采用纳米SiO2溶液、壳聚糖溶液、纳米SiO2与壳聚糖的复合溶液对鸡蛋进行涂膜保鲜试验,在35 d的贮藏期间,对鸡蛋各项感官指标和内部品质指标变化进行分析。结果表明,当贮藏35 d时,3种处理对鸡蛋的保鲜效果均优于空白对照组。其中纳米SiO2与壳聚糖的复合涂膜效果次于壳聚糖涂膜效果,优于单独使用纳米SiO2涂膜和空白对照组。纳米SiO2涂膜贮藏至35 d时,感官表现为近似散黄但未散黄,质量损失率为4.98%,哈夫单位为58,蛋黄比率为24.3%,蛋黄系数0.25,蛋清pH值为9.2。纳米SiO2与壳聚糖复合溶液对新鲜鸡蛋具有较明显的保鲜作用。 相似文献
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壳聚糖复合涂膜对杏鲍菇保鲜效果的研究 总被引：4，自引：1，他引：3
【研究目的】杏鲍菇在采后易失水褐化等原因降低食用及商品价值,为延长其货架期,需筛选出适于杏鲍菇的壳聚糖复合涂膜。【方法】该实验以杏鲍菇（Pleurotus eryngii）为研究材料,在室温（22±2℃）条件下,以去离子水浸涂杏鲍菇为对照,采用不同的壳聚糖复合涂膜处理进行保鲜实验,通过L9（33）正交试验筛选杏鲍菇保鲜的最佳复合涂膜配方,并研究其生理效应。【结果】结果表明,与对照相比,筛选出的最佳壳聚糖复合涂膜液能够有效降低杏鲍菇的褐变程度与含水率,延缓游离氨基酸含量、可溶性蛋白含量、可溶性总糖等各指标的变化幅度,保鲜效果达到显著水平（P＜0.05）。【结论】适于杏鲍菇的壳聚糖复合涂膜的配比为1.5%的壳聚糖+1.0%的乙酸+0.03%的吐温20+3.0%的甘油,该涂膜起到延缓杏鲍菇采后衰老,保持较好的营养价值和加工风味,达到保鲜目的。 相似文献
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《农产品加工．学刊》2016,(2)
以葡萄为保鲜对象,采用涂膜法研究壳聚糖复合溶液对葡萄的保鲜效果。通过比较流延膜的力学、阻隔和透明等性能以及对葡萄的保鲜效果,确定壳聚糖、醋酸、丙三醇、山梨酸钾的最佳添加量。结果表明,壳聚糖复合膜的保鲜效果主要受p H值和壳聚糖溶解性影响;由壳聚糖添加量1.5%,醋酸添加量1%,丙三醇添加量0.5%,山梨酸钾添加量0.5%组成的壳聚糖复合膜对葡萄的保鲜效果最佳,相对于空白组延长了保鲜期5 d。 相似文献
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以新鲜草莓为试材,分别采用大蒜精油、山苍子精油、丁香花蕾精油、生姜精油复合羧甲基纤维素钠为涂膜保鲜原料,研究(15±2)℃条件下不同精油涂膜液处理对草莓贮藏品质的影响。结果表明,与对照组相比,山苍子精油、大蒜精油、生姜精油-羧甲基纤维素钠复合涂膜液均能显著降低草莓果实在贮藏过程中的腐烂指数及重量损失,显著抑制贮藏前期草莓果实的呼吸强度,进而抑制草莓果实在贮藏过程中可溶性固形物含量和花色苷含量的下降及丙二醛含量的上升,提高草莓的贮藏品质。其中,山苍子精油-羧甲基纤维素钠复合涂膜液对草莓的保鲜效果最佳,为草莓的贮藏保鲜提供了一种新的方法。 相似文献
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Jens Jensen 《Euphytica》1979,28(1):47-56
Summary The high-lysine gene in Risø mutant 1508 conditions an increased lysine content in the endosperm via a changed protein composition, a decreased seed size, and several other characters of the seed. The designation lys3a, lys3b, and lys3c, is proposed for the allelic high-lysine genes in three Risø mutants, nos 1508, 18, and 19. Linkage studies with translocations locate the lys3 locus in the centromere region of chromosome 7. A linkage study involving the loci lys3 and ddt (resistance to DDT) together with the marker loci fs (fragile stem), s (short rachilla hairs), and r (smooth awn) show that the order of the five loci on chromosome 7 from the long to the short chromosome arm is r, s, fs, lys3, ddt. The distance from locus r to locus ddt is about 100 centimorgans. 相似文献
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G. H. Kroon 《Euphytica》1994,76(1-2):125-125
Summary
K x vadensis is a hybrid of K. blossfeldiana and K. marmorata obtained after doubling the number of chromosomes. 相似文献
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Hongyan WEI Jian ZHOU Jinguang LU Jingzheng SONG Qiongxi YU Zhihong JIANG 《Medicinal Plant》2019,(6):27-29
[Objectives]This study aimed to establish a QAMS(quantitative analysis of multi-components by single-marker)method for simultaneous determination of four phenol... 相似文献
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Summary Avoidance of rust fungi that was based on poor appressorium induction was previously found in Hordeum chilense. In the present study 95 accessions of Triticeae were screened for avoidance of Puccinia hordei. The percentage of appressorium formation per germinated spore ranged from 6 to 90%. On none of the 41 accessions of Aegilops, Agropyron, Elymus, Secale, Thinopyrum or Triticum studied was the rate of appressorium formation lower than 25%. Lower rates of appressorium formation were, however, found on accessions of wild barley species Hordeum brachyantherum, H. marinum, H. parodii and H. secalinum. Its implications in cereal breeding are discussed. 相似文献
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D. A. Bond G. J. Jellis G. G. Rowland J. Le Guen L. D. Robertson S. A. Khalil L. Li-Juan 《Euphytica》1993,73(1-2):151-166
Progress is being made, mainly by ICARDA but also elsewhere, in breeding for resistance to Botrytis, AScochyta, Uromyces, and Orobanche; and some lines have resistance to more than one pathogen. The strategy is to extend multiple resistance but also to seek new and durable forms of resistance. Internationally coordinated programs are needed to maintain the momentum of this work.Tolerance of abiotic stresses leads to types suited to dry or cold environments rather than broad adaptability, but in this cross-pollinated species, the more hybrid vigor expressed by a cultivar, the more it is likely to tolerate various stresses. 相似文献
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Chunli TANG Fengxian ZHAO Hongxia CHEN Jiabao MA Jiangcun WEI Meiyan QIU Zhen XIE 《Medicinal Plant》2019,(6):60-65
[Objectives]To optimize the water extraction process of Chinese Herbal Compound Man Gan Ning and establish a method for its extraction and content determination... 相似文献
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Mohammed Riyazaddin Polavarapu B. Kavi Kishor Are Ashok Kumar Belum V. S. Reddy Rajendra S. Munghate Hari C. Sharma 《Plant Breeding》2015,134(4):423-436
Sorghum shoot fly, Atherigona soccata, is one of the important pests of postrainy season sorghums. Of the 90 sorghum genotypes evaluated for resistance to this pest, RHRB 12, ICSV 713, 25026, 93046 and 25027, IS 33844‐5, Giddi Maldandi and RVRT 3 exhibited resistance in postrainy season, while ICSB 463, Phule Anuradha, RHRB 19, Parbhani Moti, ICSV 705, PS 35805, IS 5480, 5622, 17726, 18368 and 34722, RVRT 1, ICSR 93031 and Dagidi Solapur showed resistance in rainy season, suggesting season‐specific expression of resistance to A. soccata. ICSB 461, ICSB 463, Phule Yasodha, M 35‐1, ICSV 700, 711, 25010, 25019 and 93089, IS 18662, Phule Vasudha, IS 18551 and 33844‐5 and Barsizoot had fewer deadhearts than plants with eggs across seasons, suggesting antibiosis as one of the resistance mechanism. Five genotypes exhibited resistance with high grain yield across seasons. Correlation, path and stepwise regression analyses indicated that leaf glossiness, seedling vigour, trichome density, oviposition and leaf sheath pigmentation were associated with the expression of resistance/susceptibility to shoot fly, and these can be used as marker traits to select and develop shoot fly‐resistant sorghums. 相似文献
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Summary Apple and pear pollen was irradiated with doses of 0, 50, 100, 250 and 500 krad (gamma rays) and stored at 4°C and 0–10% r.h. From the in-vitro germination percentages an average LD 50 dose of about 220 krad was estimated. For both irradiated and untreated pollen a close and corresponding lineair relationship existed between germination percentage and pollen tube growth.Irradiated pollen was much more sensitive to dry storage conditions than untreated pollen, resulting in less germination and more bursting. Apparently, irradiation caused the pollen cell membrane to lose its flexibility faster than normal. Rehydration of dry-stored, irradiated pollen in water-saturated air restored germination percentages up to their initial levels. The importance of this procedure in germination trials is stressed. 相似文献
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E. Keep 《Euphytica》1986,35(3):843-855
Summary Cytoplasmic male sterility (cms) is described in the F1 hybrids Ribes × carrierei (R. glutinosum albidum × R. nigrum) and R. sanguineum × R. nigrum. In backcrosses to R. nigrum, progenies with R. glutinosum cytoplasm were either all male sterile, or segregated for full male fertility (F) and complete (S) and partial (I) male sterility. Ratios of F:I+S suggested that two linked genes controlled cms, F plants being dominant for one (Rf
1) and recessive for the other (Rf
2).Segregation for cms in relation to three linded genes, Ce (resistance to the gall mite, Cecidophyopsis ribes), Sph
3(resistance to American gooseberry mildew, Sphaerotheca mors-uvae) and Lf
1(one of two dominant additive genes controlling early season leafing out) indicated that Rf
1and Rf
2were in this linkage group. The gene order and approximate crossover values appeared to be: % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXafv3ySLgzGmvETj2BSbqef0uAJj3BZ9Mz0bYu% H52CGmvzYLMzaerbd9wDYLwzYbItLDharqqr1ngBPrgifHhDYfgasa% acOqpw0xe9v8qqaqFD0xXdHaVhbbf9v8qqaqFr0xc9pk0xbba9q8Wq% Ffea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qqQ8frFve9Fve9Ff0dme% aabaqaciGacaGaamqadaabaeaafaaakeaacaWGdbGaamyzamaamaaa% baGaaiiiaiaacccacaGGWaGaaiOlaiaacgdacaGG0aGaaiiiaiaacc% caaaGaaiiiaiaacccacaGGGaGaamOuaiaadAgaliaaigdakmaamaaa% baGaaiiiaiaacccacaGGGaGaaiiiaiaaccdacaGGUaGaaiOmaiaacs% dacaGGGaGaaiiiaiaacccacaGGGaGaaiiiaaaacaWGsbGaamOzaSGa% aGOmaOWaaWaaaeaacaGGGaGaaiiiaiaacccacaGGGaGaaiiiaiaacc% cacaGGGaGaaiiiaiaacccaaaGaamitaiaadAgaliaaigdakmaamaaa% baGaaiiiaiaacccacaGGGaGaaiiiaiaacccacaGGGaGaaiiiaiaacc% cacaGGGaGaaiiiaiaacccacaGGGaaaaiaadofacaWGWbGaamiAaSGa% aG4maaaa!6E4D!\[Ce\underline { 0.14 } Rf1\underline { 0.24 } Rf2\underline { } Lf1\underline { } Sph3\]. Crossover values of 0.36 for Ce-Lf
1, and 0.15 for Lf
1-Sph
3were estimated from the relative mean differences in season of leafing out between seedlings dominant and recessive for Ce and Sph
3.It is suggested that competitive disadvantage of lf
1-carrying gametes and/or zygotes at low temperatures may be implicated in the almost invariable deficit of plants dominant for the closely linked mildew resistance allele Sph
3. Poor performance of lf
1- (and possibly lf
2-) carrying gametes and young zygotes during periods of low temperature at flowering might also account for the liability of some late season cultivars and selections to premature fruit drop (running off). 相似文献
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[Objectives] To determine the optimum extraction technology for total phenols of leaves in Acanthopanax giraldii Harms.[Methods]The single factor test and ortho... 相似文献