微生物传感器研究进展

对微生物传感器结构、功能及其在环境监测、生物工程、医学等领域的最新应用进行了综合评述,探讨了微生物固定化方法对传感器性能的影响,并对微生物传感器研究进展和应用前景进行了分析展望。     

The use of smart biosensors during a food safety incident: Consumers' cognitive-behavioural responses and willingness to pay

Intelligent and active packaging could allow consumers to control cognitive reactions linked to the risk of consuming food products contaminated by microbiological pathogens and thus mitigating negative consequences of food safety incidents. However, despite advances in technology, consumers' reactions and willingness to pay for active and intelligent packaging in the absence and presence of food safety incidents remain somewhat unexplored. To fill such a gap this study incorporates protection motivation theory (PMT) within a contingent valuation survey conducted in the UK to explore consumers' behavioural responses to risk communication in the absence and presence of a food safety incident. These responses were moderated by the possibility of buying hypothetical meat products marketed with biosensors informing consumers of the presence of bacteria post-purchase. A singular approach was developed to identify the following four behavioural responses of the PMT's cognitive mediating process: no response, fear, low response and danger control. Results indicate that the theoretical components of PMT play a different role in the absence and presence of food safety incidents. Respondents who receive risk information are willing to pay more than other participants to adopt precautionary behaviour and that purchasing behaviour varied across these four cognitive-behavioural responses. Governmental institutions, the food industry and retailers should consider working together to reassure consumers by investing in technology that may help consumers to mitigate fear during a food safety incident, but also to develop appropriate risk communication strategies that should focus more on the cognitive-behavioural outcomes analysed in this study.