共查询到20条相似文献，搜索用时 78 毫秒
1.
《农产品加工．学刊》2020,(16)
采用正交试验对柿子粉多糖色素脱除活性炭法进行工艺条件的优化,分别考查活性炭添加量、脱色温度及脱色时间对色素脱除效果的影响。在单因素试验的基础上,以脱色率为评价指标,确定了活性炭吸附柿子粉多糖色素的最佳工艺为活性炭添加量6%,脱色温度40℃,脱色时间40 min,在此条件下脱色率为78.41%,多糖保留率为84.98%。试验证明,活性炭除去柿子粉多糖色素的方法方便可行,为柿子粉的研究与开发提供理论依据。 相似文献
2.
响应面法优化大米淀粉糊化工艺研究 总被引：1，自引：0，他引：1
以大米为原料,研究淀粉凝胶糊化工艺中加水量、糊化温度、糊化时间对鲜湿米粉弹性的影响。在前期单因素试验结果的基础上,采用响应面法对糊化工艺进行优化。结果表明,以鲜湿米粉弹性为考察指标的最佳淀粉糊化工艺参数为:粉坯加水量68%,糊化温度95℃,糊化时间12 min,在此条件下,鲜湿米粉的弹性可达0.816±0.005,与理论值相近,此模型可预测大米淀粉在不同糊化工艺条件下的弹性。 相似文献
3.
以干燥粉碎后核桃仁为原料,研究应用超临界CO2流体萃取核桃油的工艺。通过正交试验及方差分析得出,超临界CO2萃取核桃油的最佳工艺条件:萃取压力为30 MPa,萃取温度50℃,分Ⅰ压力8 MPa,分Ⅰ温度55℃,萃取时间2 h,在此条件下萃取率为85%以上。 相似文献
4.
超临界CO2流体萃取瑞香狼毒根部油脂工艺条件的优化 总被引：1，自引：1，他引：0
【研究目的】本实验采用超临界CO2萃取技术提取瑞香狼毒根部油脂,并确立其工艺条件【方法】通过单因素试验及正交试验,对CO2流量、萃取时间、萃取压力、萃取温度、分离温度、分离压力等条件进行了优化。【结论】在试验范围内,各影响因素对瑞香狼毒根部油脂得率作用的大小依次为：萃取压力＞分离压力＞萃取温度＞分离温度。超临界CO2流体萃取技术提取瑞香狼毒根部油的最佳工艺参数为：CO2流量21L/h,萃取时间为100min,萃取压力30MPa,萃取温度46°C,分离温度45°C、分离压力5.5Mpa。在此最佳工艺条件下,瑞香狼毒根部油脂萃取率达到3.57%。 相似文献
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6.
以活性炭为脱色剂,研究影响仙草胶提取液脱色效果的因素及条件,优化了脱色工艺参数。试验结果表明,活性炭对仙草胶提取液的最佳脱色条件为：活性炭用量2.5%,温度60 ℃,时间50 min,在此条件下,仙草胶提取液的脱色率可达92.3%,多糖损失率为20.5%。 相似文献
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8.
以金桔提取率为考察指标,在单因素试验的基础上通过响应面分析法优化金桔提取的工艺条件,通过正交试验优化金桔粉的最佳喷雾干燥工艺参数.结果表明,金桔的最佳提取工艺为:料液比1:6(g/mL),提取温度96℃,提取时间51 min,提取次数4次,在此优化工艺条件下,金桔提取率为15.48％,与理论预测值15.56％较为接近.金桔粉的最佳喷雾干燥工艺条件为:助干剂添加量120％,进风温度120℃,进样流量20％,雾化空气流量500 L/h,该工艺条件下出粉率达84.80％,可较大程度地保持金桔的营养和风味,为金桔产品的批量化生产提供参考依据. 相似文献
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10.
花生壳纤维素提取及半纤维素与木质素脱除工艺探讨 总被引：5，自引：2，他引：3
为了获取优质的纤维素,以花生壳为原料,通过对纤维素提取工艺的探讨,确定了既能保持纤维素提取量,又可较多脱除半纤维素和木质素的工艺条件。试验结果表明,在NaOH溶液的质量分数为4%、反应温度为55℃、反应时间为2 h条件下,半纤维素的脱除率为80.67%;在15 g/L NaClO2和31 mL/L乙酸联合处理、处理温度75℃条件下,木质素脱除率为47.29%。提取出的花生壳纤维素含量可达40%以上。说明在此工艺条件下,能够提取出含半纤维素和木质素较少的优质纤维素。 相似文献
11.
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
12.
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
13.
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
14.
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
15.
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
16.
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
17.
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
18.
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
19.
[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
20.
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