共查询到20条相似文献，搜索用时 78 毫秒
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以高筋小麦粉为主要原料,采用一次发酵法制作新疆卡提拉玛,以新疆卡提拉玛的感官评价值为考察指标,比较了和面时间、发酵时间、焙烤时间、面火温度、底火温度等加工工艺条件对新疆卡提拉玛感官品质的影响。通过加工工艺响应面优化试验得出影响新疆卡提拉玛感官品质的因素从大到小依次是:B(发酵时间)D(面火温度)E(底火温度)C(焙烤时间)A(和面时间)。响应面优化得出最佳试验条件为:和面时间30 min,发酵时间61 min,焙烤时间20 min,面火温度201℃,底火温度182℃,在此条件下制得的新疆卡提拉玛感官品质最佳,口感醇香、色泽金黄、质地酥脆、层次分明、无焦糊现象、具有奶皮特有香气,感官品质评分为92.47分。该研究为新疆卡提拉玛的实际生产与加工提供了理论依据。 相似文献
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以复水率和感官评定为评价指标,探讨方便米饭加工中的浸泡、蒸煮、离散、干燥等主要环节的最优工艺条件。结果表明,方便米饭加工的最优工艺条件为:浸泡温度为60℃,时间为30min;原料米与蒸煮水的比例为1∶1.3,蒸煮时间20min;热水离散温度为80℃,时间为5min;采用热风干燥,干燥温度为80℃,时间为150min。 相似文献
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《农产品加工．学刊》2020,(2)
对丹凤牡丹花蕊固体饮料加工工艺进行研究,结果表明,最优配方为丹凤牡丹花蕊浓缩液用量20 m L,白砂糖添加量8%,柠檬酸添加量0.6%;最优喷雾干燥工艺为固形物含量30%,进风温度190℃,进样量35 m L/h,在此条件下所得固体饮料色泽淡黄、颗粒细腻,有花蕊清香。 相似文献
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杨薇 《农产品加工．学刊》2011,(1):59-62
以大红枣果实为原料,采用果浆酶酶解的方法浸提红枣汁,研究了红枣汁加工工艺中的软化条件和果浆酶作用最佳环境,从而得出红枣提汁的优化工艺条件。结果表明,红枣软化工艺的参数为软化温度50℃,软化时间15min,水料比3:1;最佳酶解工艺条件为反应温度30℃,反应时间3h,果浆酶的添加量0.04%。 相似文献
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优化油茶籽饼粕多糖酶水解与传统热水浸提相结合的提取工艺,提高油茶籽饼粕多糖的得率。以油茶籽饼粕为考查对象,对提取温度、提取时间、料液比3种提取工艺条件进行单因素试验,并在此基础上进行三因素三水平的正交试验,以优化提取的工艺参数。结果显示,最优的提取油茶籽饼粕多糖的工艺条件为提取温度80℃,料液比1∶20(g∶m L),提取时间30 min,在此条件下油茶籽饼粕粗多糖的平均得率为18.5%。此优化提取工艺具有合理性、可操作性,且提取效率高,是一种高效提取油茶籽饼粕多糖的方法。 相似文献
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牛初乳液态奶和牛初乳粉的加工工艺探讨 总被引：1，自引：1，他引：0
在查阅大量资料的基础上,结合乳品厂工作的实践经验,探讨牛初乳液态奶和牛初乳粉的加工工艺,结果表明,牛初乳的加工工艺与常乳大体相同,只是由于牛初乳的热稳定性差,其杀菌、干燥、浓缩等工艺条件与常乳不同。通常条件下,牛初乳的杀菌温度为60℃,时间为30min,也可以用辐照等高科技技术手段杀菌,辐照杀菌采用~(60)Co,剂量≤8.4kGy;真空浓缩压力>81kPa,温度≤60℃,浓缩后的奶液干物质含量达到40%～60%;干燥可以采用冷冻真空干燥或低温真空喷雾干燥法,前者用小于规模干燥,真空度为0.3～0.8MPa,料液受热温度<65℃,热蒸汽温度控制在70～75℃。 相似文献
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《农产品加工．学刊》2017,(1)
白首乌中多糖含量丰富,为改善目前实际生产中白首乌水溶性成分利用不足的现状,实现白首乌资源的充分开发,采用响应面法优化提取白首乌多糖的工艺条件,以期为这一水溶性功能成分的开发提供基础。选择料液比、提取温度和提取时间3个因素进行单因素试验,根据单因素试验结果设计中心组合试验,采用响应面法确定最优工艺参数。结果表明,白首乌多糖的最优提取工艺为料液比1∶17,提取温度91℃,提取时间3 h。在此条件下,白首乌多糖得率为1.58%,与模型的预期值1.61%基本相符。由此可见,响应面法对白首乌多糖提取条件进行优化合理可行,具有较高的应用价值。 相似文献
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《农产品加工．学刊》2021,(12)
以燕麦为材料,采用米根霉、米曲霉和毛霉3种霉菌分别对燕麦进行发酵,研究了3种霉菌的接种量、发酵时间、发酵温度及水分添加量对发酵燕麦制品甜度和口感的影响,并以感官评分为指标,通过单因素试验和正交试验优化3种霉菌发酵燕麦的最优工艺。结果表明,米根霉发酵燕麦(RFO)的最优工艺为米根霉接种量0.5%,发酵时间36 h,发酵温度33℃,水分添加量10%,在此条件下,产品的感官评分为95.37±2.09分(满分100分);米曲霉发酵燕麦(AFO)的最优工艺为米曲霉接种量0.01%,发酵时间36 h,发酵温度25℃,水分添加量10%,在此条件下,感官评分为94.21±1.32分(满分100分);毛霉发酵燕麦(MFO)的最优工艺为毛霉接种量0.01%,发酵时间36 h,发酵温度30℃,水分添加量12%,在此条件下,感官评分为91.64±2.25分(满分100分)。试验优化了3种霉菌发酵燕麦的最优工艺,充分利用了燕麦资源,为新型燕麦产品的研发提供新的思路和途径。 相似文献
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介绍了运用冷冻干燥技术进行速溶蛋花汤的加工,研究了生产工艺、特点以及影响产品质量的主要因素。试验表明,采用冷冻干燥技术加工的速溶蛋花汤,具有营养丰富、风味独特、方便快捷等特点。 相似文献
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Efficiency of water use of early plantings of sunflower 总被引：4，自引：0，他引：4
M. Auxiliadora Soriano Francisco Orgaz Francisco J. Villalobos Elías Fereres 《European Journal of Agronomy》2004,21(4):465-476
Rain fed crop production in Mediterranean environments depends to a large extent on strategies that avoid the intense summer drought. Early plantings of sunflower have given consistently higher yields in such environments, but the basis for such yield increases has not been explored. We conducted two field experiments at Cordoba (Spain) to investigate the effects of an early and a late planting date on the components of water-limited crop productivity; namely, water use (T), water use efficiency (TE) and harvest index (HI) of sunflower. The results were generalized by simulating rain fed sunflower yields, under early (1 January) and late (15 March) plantings, for a 25-year period with the aid of a simulation model of the Ceres type (OILCROP-SUN) which has been validated in Cordoba. Experimental seed yields of early plantings in 1989 and 1996 were 2.0 and 3.0 t ha−1, while late plantings yields were 1.3 and 2.4 t ha−1, for the 2 years. Average simulated yields were 2.7 ± 1.1 and 1.9 ± 0.7 t ha−1 for early and late plantings, respectively. For the 2 years, T of early plantings was higher than that of late plantings, but the response of TE and HI to planting date was not the same in the two experiments. In the simulation exercise, T and TE of early plantings were consistently higher than those of late plantings, while there were no differences in the HI for the two planting dates. We conclude that early plantings of sunflower increase rain fed yields by increasing both T and TE, while the impact of planting date on HI very much depends on the crop water stress pattern, which is quite variable from year to year even in the predictable Mediterranean environment. 相似文献
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The cotyledon and hypocotyl of eight varieties of alfalfa( Medicago sativa L. )are used to study the effect of different cultivation procedures and genotypes on embryogenic callus and embryoid induction,plant development and transplant of alfalfa.The varieties of alfalfa with high embryoid induction rate and high differentiation rate are screened. A high frequency regeneration system for alfalfa tissue culture is established:which is benifical to the gene transformation of alfalfa. 相似文献
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Automobile comfort dynamic simulation is necessary when we predict and evaluate the comfort of a automobile or optimize performance of automobile. The nine DOF vibration model of automobile is established , which acts root mean square value of body in multiple work conditions as comfort evaluation indices. Based on the comfort simulation, the Hongyan 1160 is predicted in the way of comfort. The programmes can be used in many different automobiles . The computational result indicates that the model can simulate vibration of automobile truly. It is significant to research automobile comfort evaluation to optimize performance of automobile and comfort simulation .The computational program can be applied to optimize or simulate which has some reference value. 相似文献
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DENG Zhao-jing 《保鲜与加工》2005,(1):153-156
A new definition of inertia,i.e. the momentum is the measuring of inertia of matter, is proposed. The article through and etc., subjects, the correctness of the new notion of inertia:The monentum is the measuring of inertia has been demonstrated, and the unsolved contradictions of the traditional definition of inetia. And the mass is the measuring of inertia has been revealed. 相似文献
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紫玉米不同组配方式的花青素含量及产量比较 总被引：2，自引：0，他引：2
以18个玉米自交系组配成的16个紫玉米杂交组合为试验材料,研究不同组配方式配制的紫玉米籽粒、穗轴、苞叶、雄穗花青素含量及花青素产量。结果表明:(1)不同组配方式的紫玉米籽粒花青素含量、籽粒产量及籽粒花青素产量差异均较大。深紫玉米×深紫玉米,花青素含量最高;深紫非糯玉米×糯玉米,籽粒产量最高;深紫玉米×深紫玉米,籽粒花青素产量最高。(2)深紫玉米×深紫玉米,穗轴花青素含量、花青素产量最高;非紫苞叶×深紫苞叶,紫玉米苞叶花青素含量、花青素产量最高;非紫雄穗×深紫雄穗,紫玉米雄穗花青素含量、花青素产量最高。(3)穗轴花青素含量与籽粒花青素含量呈极显著正相关;雄穗花青素含量与苞叶花青素含量呈极显著正相关。(4)紫玉米花青素总产量(籽粒、穗轴、苞叶、雄穗)为:深紫×深紫>深紫×浅紫>非紫×深紫>浅紫×非紫;籽粒花青素产量对总花青素产量贡献最大。 相似文献
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香蕉是热带亚热带发展中国家重要的粮食作物和碳水化合物来源。但近年来,香蕉生产受到严重的病虫危害。大多数香蕉栽培品种是三倍体,生长周期长,而且不孕。由于没有种子,给繁殖和育种带来一定的困难。遗传转化技术的发展为香蕉品种的改良提供了一种有效的手段。香蕉的遗传转化方法有电激法、基因枪法、农杆菌介导法等。农杆菌介导法的应用是香蕉品种改良的一个重大突破。香蕉遗传转化的外植体也发展到多种,有原生质体,胚性细胞悬浮系,分生组织,以及横切薄片等。近几年,随着分子生物学的发展,出现了转化效率更高,重复性更好的香蕉遗传转化技术。如农杆菌和基因枪结合法,离心辅助农杆菌介导法、真空渗透技术等。这些新技术新方法的出现,必将推动香蕉产业高速发展。 相似文献