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结合SWOT分析方法对陕西浓缩苹果汁产业的优势、劣势、机遇和挑战进行较为全面的分析,并提出陕西浓缩果汁产业进一步发展的方向和具体对策。 相似文献
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以玫瑰花预处理沉淀物、红枣浓缩汁、低聚果糖和赤藓糖醇为主要研究对象,以感官得分为评价指标,通过单因素试验和正交试验方法确定玫瑰红枣牛初乳冻干粉的最佳配方,并进一步测定玫瑰红枣牛初乳冻干粉对DPPH自由基、超氧阴离子自由基和对羟基自由基的清除率,评价玫瑰红枣牛初乳冻干粉抗氧化活性.结果表明,玫瑰花预处理沉淀物的最佳添加量为2.5%,红枣浓缩汁的最佳添加量为5%,低聚果糖的最佳添加量为7.5%,赤藓糖醇的最佳添加量为17.5%,因此,玫瑰红枣牛初乳冻干粉的最佳配方为玫瑰花174.8%,红枣浓缩汁5%,N-乙酰神经氨酸5%,透明质酸钠2%,胶原蛋白肽40%,弹性蛋白0.2%,雨生红球藻5%,低聚果糖7.5%,复配营养强化剂(维生素C+维生素E+烟酸+麦芽糊精)1%,赤藓糖醇17.5%,生鲜牛初乳138.8%.体外抗氧化试验得到玫瑰红枣牛初乳冻干粉对O2-、DPPH和·OH的清除率分别为77.41%、87.68%和57.13%,显著高于对照组(P<0.05),可见玫瑰红枣牛初乳冻干粉具有抗氧化活性,为深度开发牛初乳冻干粉新方向提供参考. 相似文献
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本研究提出可以依据消费者对食品口味的预期生产食品包装,并以橙汁外包装为例,建立了复制图像与消费者预期口味的关系模型。此模型可以通过果汁包装物的颜色预测果汁的酸度、甜度、苦度、风味强度以及新鲜程度。实验结果表明:可以利用色差公式的概念来建立关系模型,通过优化CIELAB公式来建立视觉响应与味觉响应间的关系。72%以上的数据验证了该模型的可靠性。 相似文献
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Geoffrey M. Pofahl Timothy J. Richards 《American journal of agricultural economics》2009,91(2):402-415
We contribute to the literature on new product valuation by presenting a model of new product introduction based on the distance metric (DM) approach of Pinkse, Slade, and Brett (2002) . Models based on the DM approach are capable of dealing with highly differentiated food categories that are often responsible for the lion's share of new product activity. Furthermore, since new products are typically characterized by differences in observable attributes, the DM approach is appropriate in that it directly accounts for such differences. Our findings reveal that consumers benefit from new products even when the number of alternatives is already high. 相似文献
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Rodney Graeme Duffett 《食品市场学杂志》2018,24(6):745-760
The purpose of this paper is to determine consumer perceptions toward sugar content of fruit juice (FJ) products in South Africa amid the current sugar tax debate. The paper also ascertains how and if consumption patterns and socio-demographic factors are associated with consumer perceptions toward FJ sugar content. A cross-sectional study was conducted via structured self-administered questionnaires, which were disseminated on a face-to-face basis. Over 7600 consumers aged 16–66+ years in suburbs, townships, and informal settlements were surveyed in South Africa. The data were analyzed through the application of a generalized linear model. Half of the respondents agreed that FJ products were high in sugar. Furthermore, several consumption and socio-demographic factors had a varied influence on consumers’ perceptions toward FJ products. This study provides marketers and retailers with new insight regarding the marketing of FJ products in a developing country amid the sugar tax debate. 相似文献
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本文选取1981~2010年间的国际低酸苹果汁等统计数据,运用计量经济学模型以及Johansen协整检验,分析低酸苹果汁出口量、浓缩苹果汁出口量和价格、鲜食苹果出口量和价格对低酸苹果汁价格的影响程度。研究发现,低酸苹果汁价格与各因素之间所存在的长期相互关系,而影响价格变动的主要因素是鲜食苹果的出口量及价格。此外,结合1991~2010年我国苹果汁出口状况,我国低酸苹果汁出口量近年来稳定增长的趋势,结合浓缩苹果汁价格变化情况,分析我国低酸苹果汁出口与国际低酸苹果汁价格之间的关系,围绕提高我国低酸苹果汁国际竞争力的角度,提出相应的改进意见。 相似文献
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目的:用液相色谱法对不同食品中脱氢乙酸的测定进行验证。方法:经50 g·L-1氢氧化钠溶液调样品pH提取脱氢乙酸,经离心、过柱净化、洗脱、过膜,用紫外检测器测定样品中的脱氢乙酸。结果:标准曲线有良好的线性关系(R2=1),最低检出浓度为0.44μg·mL-1,测定样品的相对标准偏差为2.65%~8.36%,加标回收率为79.2%~111.2%。结论:该方法操作简单,检测灵敏度高,干扰少,结果准确。 相似文献