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采用气相色谱-串联质谱技术测定油菜蜜中6 种低聚糖成分,高效液相色谱-串联质谱技术测定油菜蜜中18 种酚酸物质,并结合偏最小二乘判别分析(partial least square-discrimination analysis,PLS-DA)对来自湖北钟祥市、江苏盐城市、青海刚察县3 个具有显著地理、气候、环境差异的51 个油菜蜜样本进行产地鉴别。方差分析结果显示:3 个产地油菜蜜中松二糖含量具有显著性差异,且青海刚察油菜蜜低聚糖含量相对偏高;油菜蜜的18 种多酚类物质中大多数具有显著的地理差异性且湖北钟祥的油菜蜜中多酚含量相对偏高。多元统计分析结果显示多酚具有显著的地理特征性。油菜蜜中低聚糖和多酚的含量结合PLS-DA产地鉴别的预测精度可达到97%。 相似文献
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采用近红外光谱技术检测蜂蜜中蔗糖含量的研究 总被引:2,自引:0,他引:2
Hou Rui-li Cheng Yu-lai Chongteng Heming College of Food Science Shenyang Agricultural University 《食品工业》2007,(2)
利用近红外透射光谱快速测量蜂蜜中的蔗糖含量,采用偏最小二乘方(PLS)回归,建立光谱测量值与化学值之间的校正模型,找出二者的相关性,探讨近红外检测技术应用于蜂蜜品质分析的可能性。 相似文献
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This paper presents a novel modified interactive honey bee mating optimization (IHBMO) base fuzzy stochastic long-term approach for determining optimum location and size of distributed energy resources (DERs). The Monte Carlo simulation method is used to model the uncertainties associated with long-term load forecasting. A proper combination of several objectives is considered in the objective function. Reduction of loss and power purchased from the electricity market, loss reduction in peak load level and reduction in voltage deviation are considered simultaneously as the objective functions. First, these objectives are fuzzified and designed to be comparable with each other. Then, they are introduced into an IHBMO algorithm in order to obtain the solution which maximizes the value of integrated objective function. The output power of DERs is scheduled for each load level. An enhanced economic model is also proposed to justify investment on DER. An IEEE 30-bus radial distribution test system is used to illustrate the effectiveness of the proposed method. 相似文献
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Bożena Denisow Marta Denisow‐Pietrzyk 《Journal of the science of food and agriculture》2016,96(13):4303-4309
Natural products, including bee products, are particularly appreciated by consumers and are used for therapeutic purposes as alternative drugs. However, it is not known whether treatments with bee products are safe and how to minimise the health risks of such products. Among others, bee pollen is a natural honeybee product promoted as a valuable source of nourishing substances and energy. The health‐enhancing value of bee pollen is expected due to the wide range of secondary plant metabolites (tocopherol, niacin, thiamine, biotin and folic acid, polyphenols, carotenoid pigments, phytosterols), besides enzymes and co‐enzymes, contained in bee pollen. The promising reports on the antioxidant, anti‐inflammatory, anticariogenic antibacterial, antifungicidal, hepatoprotective, anti‐atherosclerotic, immune enhancing potential require long‐term and large cohort clinical studies. The main difficulty in the application of bee pollen in modern phytomedicine is related to the wide species‐specific variation in its composition. Therefore, the variations may differently contribute to bee‐pollen properties and biological activity and thus in therapeutic effects. In principle, we can unequivocally recommend bee pollen as a valuable dietary supplement. Although the bee‐pollen components have potential bioactive and therapeutic properties, extensive research is required before bee pollen can be used in therapy. © 2016 Society of Chemical Industry 相似文献
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本文以蒜头为原料,用蜂蜜对大蒜进行脱臭的机理、方法、工艺参数进行探讨,开发相应的营养食品。先将蒜头置于95℃水中烫漂2min,再将大蒜质量15倍的蜂蜜加入后脱臭11min,并进行打浆、罐装等加工,从而制得既有浓郁蒜蜜香味、保存大蒜有效的营养成分(大蒜素和SOD酶),又无蒜臭、方便食用的高级保健丽琳食品。 相似文献
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