查看更多>>摘要：On April 1, 2015, Japan enacted the foods with function claims (FFCs) system, which categorizes the third function of food, based on the dietary supplement system of the United States. FFCs are popular in the food market in Japan; we detected FFCs with differences between the health claims listed on food labels and the actual efficacy information of functional substances that are based on scientific evidence. The potential health benefits of foods should be accurately conveyed for consumers to make informed food choices for their health promotion. This study clarified the association between food selection and differences in listed efficacy information. A survey was conducted in May 2020 with 664 consumers aged 20-80 years, using a self-administered questionnaire. Participants were asked to select one of two products containing the same functional substance but labeled with either single or multiple claims based on the same scientific evidence. Participants were asked whether they had any queries about the information discrepancy. There were no significant differences between food selection groups stratified by age, sex, academic background, experience with foods with health claims, and selected health claim of interest, with the exception of queries on the information discrepancy referring to the efficacy information of the functional substance-22.2% (22/29) for the single-benefit vs. 37.3% (211/565) for the multiple-benefit group (p < 0.001). A relationship between a query regarding the information discrepancy and the selection of products with multiple benefits listed on the label was found after adjusting for participants' background (adjusted odds ratio: 2.1, 95% confidence interval: 1.2-3.4). Querying the information discrepancy affected food selection; therefore, it may be important to develop a standard clinical evaluation for effective benefit communication.
查看更多>>摘要：Staphylococcus aureus, S. epidermidis, S. haemolyticus, and S. hominis are important pathogenic microorganisms that cause food contamination and clinical infections. This study aimed to develop a rapid, accurate, and monitoring technique for simultaneous detection of these Staphylococcus spp. in food. A total of 19 novel candidate species-specific targets for these four Staphylococcus spp. were mined based on pangenome analysis. Four novel targets (comFA for S. aureus, group_14348 for S. epidermidis, group_26190 for S. haemolyticus, and group_26478 for S. hominis) were selected for quantitative polymerase chain reaction (qPCR). The limit of detection in pure culture without pre-enrichment were 102 colony-forming units (CFU)/mL for S. aureus, 103 CFU/mL for S. epidermidis and S. haemolyticus, and 100 CFU/mL for S. hominis, respectively. This method allowed fast, sensitive, and accurate detection of the target Staphylococcus spp. in actual samples and the presence of nontarget bacteria. The feasibility of this method was satisfying in terms of sensitivity, specificity and efficiency after evaluating 100 samples, as well as being consistent with the national standard detection method. Thus, this qPCR assay, based on novel species-specific targets, allows efficient screening for pathogenic Staphylococcus spp., and may help prevent staphylococcal contamination of food.
查看更多>>摘要：Food packaging is an integral part of the food production and lies in the core of food manufacturing business, and becomes a sole vivacious policy for ensuring the quality of food. Avoidance of wastage, reduction in preservative utility and preclusion of spoilage are some of the important functionalities of packaging materials used in food industry. Old-fashioned strategies of food packaging although achieved good quality assurance in foods, but the major limitations of conventional strategies lie in inefficient control regarding microbial growth. Imparting antimicrobial functionality and augmentation in barrier characteristics are some of the potent applications for which nanomaterials were utilized previously. Evolved emerging trends also encompasses the utilization of functionalized nanomaterials. Refining the efficiency of antimicrobial nanocomposites that are to be utilized in food packaging substances, have always been the top priority behind their usage. Since the incorporation of functionalized nanomaterials/nanocomposites, the neutralization rate of microbes by packaging materials has encountered a steep rise. This review initially shed light on different functionalized nanomaterials used in antimicrobial food packaging and their impact on the environment and humans. The latter section briefly discusses about the use of functionalized nanomaterials in other areas of food safety apart from food packaging.
查看更多>>摘要：This study quantified eight polycyclic aromatic hydrocarbons in fishery products. Satisfactory linearity (r > 0.99), recovery (80.00-120.00%), LOD (0.21-0.54 mu g/kg), LOQ (0.07-0.18 mu g/kg), accuracy (81.00-120.00%), and precision (0.61-15.00%) of 8 polycyclic aromatic hydrocarbons (PAHs) were obtained. The average concentration of PAH8 was 2.13 mu g/kg. PAHs concentrations were converted to carcinogenicity of benzo [alpha] pyrene (BaP) to recalculate the toxic equivalent value (TEQ) of individual PAHs and then divided by age group to evaluate the average exposure to PAHs for the whole population and determine the 95th percentile of exposure from daily intake of fishery products. The exposure amount of PAH8 was 7.18 x 10(-)(4) mu g-TEQ(Ba)(P)/kg/day. Based on estimated total dietary exposure to PAHs published by WHO/JECFA, the margin of exposure (MOE) of PAH8 was 6.54 x 10(10), demonstrating that intake associated with fishery products is negligible. Based on MOE, incremental lifetime cancer risk of total PAHs showed low level of potential risk.
NSTL
Elsevier