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《Food Policy》2019
Food safety is a very important topic in China. We investigate Chinese consumers’ preferences and willingness to pay (WTP) for food traceability using a choice experiment. Given that consumers’ trust in the food system may affect their preferences and WTP, we also assess the interaction between consumers’ trust in government’s supervision of food safety and food labels and consumers’ preferences for traceable food products. Using data collected from a choice experiment on Fuji apples in a face-to-face survey in six Chinese cities, the results show that (i) consumers are willing to pay for traceable food but their valuations can differ upon the degree of their trust in government’s supervision of food safety and food labels; (ii) consumers are willing to pay for traceability with strong evidence of preference heterogeneity; (iii) government is not the most trusted safety inspection and certificate authority as found in prior studies using animal food products in China. 相似文献
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Agricultural applications of nanotechnology are at a relatively early stage and little is known about consumer responses to the technology. Canadian consumer responses to food nanotechnology are examined through the lens of the Food Value Scale. Data from a survey of Canadian consumers are used to evaluate the relative importance of eleven food values to food purchase decisions. We find that taste, safety, nutrition, and price are among the most important food values to Canadians, however, consumers exhibit considerable heterogeneity with respect to the priority placed on these values. A discrete choice experiment (DCE) explores the effect of food values on choice behavior. The DCE is positioned as a sliced apple product with non-browning and antioxidant-enhanced features introduced through the use of nanocoating or a conventional coating method. Random parameters logit (RPL) and latent class models (LCM) confirm the existence of significant preference heterogeneity. The LCM identifies three classes of consumers: “supporters,” “doubters,” and “opponents” who differ in their reaction to nanotechnology and in the relative importance placed on food values such as naturalness, novelty, and convenience. The analysis shows that food values provide additional insights into consumers’ food choices and their attitudes toward novel food technologies. 相似文献
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本研究以阿克苏苹果样品中腐霉利的残留为研究对象,采用行业标准《蔬菜和水果中有机磷、有机氯、拟除虫菊酯和氨基甲酸酯类农药多残留的测定》(NY/T 761—2008)为参比方法,分别选取3家快检试剂盒测定苹果样品中添加的不同浓度腐霉利标品,根据《食品快速检测方法评价技术规范》对其快检适用性进行评估.结果显示,试剂盒A与试剂盒C在0.3 mg·kg-1浓度以上呈阳性结果,灵敏度为75%、特异性为100%、假阴性率为25%、假阳性率为0;试剂盒B在0.1 mg·kg-1以上呈阳性结果,其灵敏度为100%、特异性为50%、假阴性率为0、假阳性率为50%;3家试剂盒的显著性差异均为83.33%、相对准确度为8.1%.所选试剂盒适用于苹果中腐霉利残留量的快速筛查. 相似文献
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Collective Reputation and Quality 总被引:1,自引:1,他引:1
Firms who sell regional or specialty products often share a collective reputation based on aggregate quality. Collective reputation can be approached as a dynamic common property resource problem. We show that for an experience good without firm traceability, individual firms have the incentive to choose quality levels that are sub-optimal for the group. These results support minimum quality standards. Trigger strategies are analyzed as an alternative solution to this problem. Finally, the implications of these results are discussed as they relate to the case study of Washington apples. 相似文献
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Agricultural biotechnology (genetic modification) has encountered resistance from many consumers, resulting in disparate regulatory approaches across different jurisdictions. The recent advent of CRISPR-Cas9, or gene editing, offers the potential for significant improvements in plant breeding. However, little is known currently about consumer responses to the technology. A factor often omitted from previous economic analyses of consumer acceptance of new food technologies is underlying human values or worldviews. Drawing upon cultural cognition theory and using data from a survey of Canadian consumers, we examine the influence of cultural values on food choice behaviours. Respondents’ pre-existing cultural values are measured on two dimensions: hierarchy-egalitarianism and individualism-communitarianism. Choice behaviours are captured using a discrete choice experiment featuring a sliced apple product with two consumer-oriented attributes (non-browning and antioxidant-enhanced) and three novel food technologies (gene editing, genetic modification, edible coating). Using a random parameters logit model with error components we find pre-existing cultural values to be significant determinants of choice behaviours. Individuals pre-disposed towards a hierarchical worldview are more accepting of novel food technologies, as are individuals with a communitarian worldview. While the use of gene editing results in negative marginal utilities in a food choice situation, the effect is not as large as with genetic modification, suggesting there is scope to ameliorate potentially negative reactions to the technology with value-compatible messages. 相似文献
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We derive a method to econometrically estimate the tariff equivalent and forgone trade effects of a prohibitive technical barrier to trade (TBT) based on Wales and Woodland's Kuhn–Tucker approach to corner solutions in consumer choice. The method overcomes the lack of observed data on bilateral trade flows and accounts for differentiated goods by place of origin. We apply the derived random utility model to international trade in apples to identify the tariff equivalent of prohibitive phytosanitary barriers imposed by Australia on potential imports of New Zealand apples. We estimate the forgone apple trade between the two countries, the implied trade injury imposed by Australia on New Zealand, and the welfare loss to Australia. The removal of the Australian policy would induce net welfare gains around US$50 million annually for Australia. 相似文献
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