A review of food safety and food hygiene training studies in the commercial sector

This review summarises the methods and results of studies conducted worldwide on the effectiveness of food safety and food hygiene training in the commercial sector of the food industry. In particular it focuses on those studies that have tried to evaluate the effectiveness of such training. Forty-six studies of food hygiene training are included which used some outcome measure to assess the effectiveness of training. The short-term nature and variety of measures used limited the majority of studies. The need for the development of evaluation criteria of effectiveness of food hygiene training is discussed.     

Food safety knowledge of foodservice workers at a university campus by education level,experience, and food safety training

Food safety knowledge of university foodservice workers was evaluated and the relationship between food safety knowledge and education level, length of employment, and food safety training was assessed using a 40-item food safety questionnaire. Each knowledge question was scored as “1” for a correct answer and as “0” for an incorrect answer. The relationships between the level of education and food safety knowledge scores and length of employment in the foodservice industry and food safety knowledge scores were determined using bivariate correlation analysis. A total of 63.5% of the respondents had limited knowledge, 79% were well-informed about hygiene practices, while 33.9% of persons knew of correct time-temperature control measures. Kendall's tau = 0.067; p = 0.294 revealed a lack of strength of the relationship between education level and food safety knowledge. The relationship between length of employment and food safety knowledge was Kendall's tau = −0.133; p = 0.121. No mean differences (p = 0.426) were observed for mean knowledge scores between groups of food safety trained and untrained persons. Neither education level, nor the length of employment in the foodservice industry had a significant impact on food safety knowledge. The authors recommend that in order to improve food safety knowledge, attention should be given to the planning, implementation, monitoring, and evaluating food safety education programs.     

Psychosocial and health-status determinants of safe food handling among consumers: A systematic review and meta-analysis

Consumers often engage in unsafe food handling practices at home, and various psychosocial and health-status constructs have been investigated to attempt to explain the underlying reasons affecting consumers' use of such practices. We conducted a systematic review of these studies to synthesize the associations between psychosocial and health-status constructs and consumer safe food handling behaviours to inform future research and interventions. The review followed standard systematic review procedures including: comprehensive search strategy; relevance screening of references; characterization of articles; data extraction; and risk-of-bias assessment. Meta-analysis was conducted on odds ratio (OR) and Pearson's r measures of association within unique data subgroups that were stratified by eight categories of behavioural determinants, five behavioural constructs, and two outcome types. A total of 66 relevant studies were identified. Knowledge was the most commonly investigated behavioural-determinant category (70%), but was only associated with one of the individual behavioural constructs: prevention of cross-contamination and practicing personal hygiene (adjusted OR = 1.56; 95% CI = 1.17, 2.06; I² = 40%; n = 4 studies). In contrast, attitudes and risk perceptions, the second most commonly investigated category (61%), was significantly associated with all constructs (adjusted ORs ranging from 1.84 to 3.63) except for avoiding the consumption of risky foods. Habits, subjective norm, and measures of self-confidence and control were consistently and strongly associated with various outcomes. Behavioural intentions had inconsistent associations with behaviours, while cues to action and the high-risk health status of consumers and their families were not associated with any outcomes. Most studies (77%) only reported measures of association that were unadjusted for confounding variables, resulting in high risk-of-bias ratings for most outcomes. Stratified analyses indicated that adjusted ORs differed from unadjusted measures. The review findings highlight key psychosocial constructs that could be targeted in future research and interventions to improve consumers' safe food handling behaviours.     

A review of motivational models for improving hand hygiene among an increasingly diverse food service workforce

Poor hand hygiene is a leading cause for the spread of foodborne illnesses in the foodservice industry. A series of complex motivational interventions must be employed to permanently change the behavior of workers, to increase their compliance and sustain appropriate levels of proper hand hygiene. Unlike the healthcare industry, which uses large, costly multi-modal behavior modification strategies, the foodservice industry must deploy rapid, cost-efficient strategies that take into account a high employee turnover rate and diverse demographics. This paper reviews the current motivational models used in the foodservice industry and examines the habitual nature of complying with good hand hygiene. It also reviews current techniques to increase hand hygiene compliance using clues from three of the five basic senses (sight, hearing, and smell) and two mechanisms (context-bridging and disgust). Lastly, the current model for habit intervention is evaluated, and its possible applications in the foodservice industry with additional reminders are accessed. We believe that this review will provide foodservice managers the background, theoretical basis and practical applications for making long-term changes in their employees on this and similar critical behaviors in foodservice.     

Knowledge,attitudes and practices of food handlers on food safety in food service operations at the Universiti Kebangsaan Malaysia

This study was conducted to determine the level of knowledge, attitudes and practices of food handlers in food service operation at the main campus of Universiti Kebangsaan Malaysia (UKM) regarding food safety. Data were collected from 112 food handlers through questionnaires which consisted of questions about knowledge, attitudes and practices. The results showed that there was significantly positive correlation among the three levels and respondents possess good scores for knowledge (19.68 ± 3.87) about personal hygiene, foodborne diseases and temperature control of food; for attitudes (89.26 ± 8.66) on safe food handling, and for practices (90.02 ± 8.23), specifically for appropriate hand washing, use of gloves in food preparation and prevention of food hazards. About 73.2% of respondents never attend any training related to food safety and majority show poor knowledge of pathogens associated with disease-causing agents as well as critical temperatures for storage of ready-to-eat foods. Therefore, effective and ongoing training on food safety and hygiene must be given to all food service employees to ensure the safety of food provided.     

Factors affecting food safety compliance within small and medium-sized enterprises: implications for regulatory and enforcement strategies

Empirical research assessed the factors affecting compliance with food safety legislation within small and medium-sized enterprises. This showed that whilst some of the barriers identified within other research were present within food businesses (specifically time and money), there were also a number of complex, underlying issues that prevented compliance with regulatory requirements and which have implications for regulatory and enforcement policy. These barriers included the lack of trust in food safety legislation and enforcement officers; a lack of motivation in dealing with food safety legislation; and a lack of knowledge and understanding.     

Using the Health Action Model to plan food safety educational materials for Hispanic workers in the mushroom industry

Sometimes educational materials do not work because they are designed without examining the worksite social and environmental factors affecting the target audience. Educational materials based on application of theory-based models may address more effectively the cause of food safety problems. The objective of this project was to use the Health Action Model (HAM) as a framework for developing food safety educational materials for Hispanic workers in the mushroom industry. HAM identifies five constructs or systems that represent conditions surrounding mushroom workers: Baseline food safety knowledge, normative system, motivational system, food safety/belief system, and appropriate working environment and conditions. Some refinements of the motivational construct were made for its use in this research. The Health Action Model provided a framework in which the variables that influence food safety behaviors were identified and described. The findings provided by using this framework were helpful to identify factors that should be taken into account in designing an educational intervention for Hispanic workers in the mushrooms industry. It is felt that the HAM model can be used as a guide to develop customized food safety educational materials at a variety of different settings and target audiences in food production facilities.     

A longitudinal evaluation of food safety knowledge and attitudes among Ontario high school students following a food handler training program

Youth are a unique audience for food safety education, in part due to low food safety knowledge. Although the effectiveness of such education has been explored for primary school and college students, no studies have assessed effectiveness among high school students specifically. We conducted a longitudinal intervention study in Ontario, Canada, between February and May 2015, to measure the baseline food safety knowledge and attitudes of high school students (n = 119; from 8 classes in 4 high schools), and determine whether these factors improved following in-class delivery of a provincial standardized food handler training program. Linear mixed effects regression models were used to model within-student changes in knowledge scores and attitudes over time (i.e., circa 2 and 12 weeks post-intervention), and to investigate associations with student characteristics. At baseline, knowledge and attitudes were poor. Following training, overall knowledge was significantly greater than at baseline, although at three months post-intervention only knowledge of safe times and temperatures for cooking and storing food remained significantly higher than baseline. Following training, students were significantly less interested in learning about how to avoid foodborne disease. Other attitudes, as well as knowledge of cross-contamination prevention and disinfection procedures, remained unchanged. These findings suggest that delivering existing food handler training programs within high schools may be a feasible mechanism for food safety educators to improve students' food safety knowledge, both overall and specific to safe times and temperatures, albeit potentially for short timeframes. Whether knowledge continues to decline beyond three months after training bears further investigation. As well, future research to investigate how students' actual food safety practices may change following such training, and whether improvements in knowledge translate into reduced foodborne disease risk, is warranted.     

Assessment of fermentation as a household technology for improving food safety: a joint FAO/WHO workshop

Food safety and nutritional aspects of lactic acid fermentation processes for the purpose of complementary food preparation at household scale in tropical countries were assessed during an FAO/WHO workshop held in Pretoria, South Africa in December 1995.

Lactic acid fermentation was evaluated in particular, taking into consideration that microbial fermentation is only a part of the food preparation processes involving other operations such as soaking, cooking and the use of germinated cereals. The latter are of special interest as they enable the preparation of semiliquid porridges of high-nutrient density.

The present state of knowledge concerning the antimicrobial effects imparted by the acidity in lactic-fermented foods was reviewed, as well as the nutritional benefits of fermentation and use of germinated cereals. Areas requiring further research were identified and prioritized.

It was concluded that high priority should be given to research on: the effect of lactic acid fermentation on viruses, parasites, some bacteria and mycotoxins; risk assessment using the HACCP approach, health education of food handlers and consumer perception of fermented foods; characterization and optimization of fermentation processes and development of appropriate starters; and some physiological and nutritional effects of consumption of fermented foods.     

Implementation of non-regulatory food safety management schemes in New Zealand: A survey of the food and beverage industry

Using a questionnaire survey, this paper examines the motivations, challenges, and impacts, and the role of third-party certification bodies' (CBs) in the implementation of non-regulatory food safety management schemes (FSMS) in the New Zealand food and beverage industry. The survey involved 115 manufacturing enterprises out of which 95.7% indicated that they had one or more FSMS in place, and 43.5% stated that they implemented one or more non-regulatory FSMS. Three main categories of non-regulatory FSMS have been implemented in New Zealand: public international standard schemes, public industry sector schemes and private individual firm schemes. The most important motivation for implementing non-regulatory FSMS is meeting the requirements of major customers. As a consequence of the implementation of non-regulatory FSMS, desirable changes have been experienced by the respondents, such as the improvement of product traceability, increasing food safety awareness of employees, satisfaction with the ability to maintain customers, decreasing the cost of wastage and reduced customer complaints. The results also indicated that the major challenges encountered during the implementation of non-regulatory FSMS were increased paper work, record keeping and documentation, and the cost of development and implementation. The costs of system design and development, and external audit fees are the major implementation costs of non-regulatory FSMS, while external surveillance audit fees and product testing are the significant operating costs of non-regulatory FSMS. The third-party CBs' service was rated by 66.0% of respondents as an important tool for them to continuously improve their food safety management.     

A comparison of food safety programs using the Customizable Tool for Online Training Evaluation

Food safety training for restaurant and food service employees is essential to reduce the risk of foodborne illness. With the large variety of food safety training programs available, it is critical to have an objective evaluation tool, which will allow managers, supervisors or purchasing agents to assessment strengths and weakness among multiple programs. The objective of this study was to use a newly created evaluation tool, the Customizable Tool for Online Training Evaluation (CTOTE) to assess and compare four online food safety training programs currently available to the food service industry. Through a comparison of the objectives of each training programs, a delivery method for training to front-line employees was identified. The preferred training approach was a blended method, which uses multiple delivery methods in a single training module to reinforce of the material being taught. The food safety training program containing the highest overall rating among respondents uses this blended delivery method and was taught at a middle school reading level. Results from this study show supervisors that front-line employees want clear, easy-to-follow instructions, the ability to check their progress, save their work and continue at a later time and include relevant examples and scenarios. Additionally, based on these results, retail employers and food processors can employ the most preferred food safety training methods for their employees.     

Knowledge of food safety and handling in households: A survey of food handlers in Mainland China

The objective of the study was to provide a picture of knowledge of food safety and handling in households and identify a demographic profile of “high-risk” groups with the poorest knowledge. A national survey of food handlers in Mainland China (n = 482) was conducted using previously validated closed questionnaires. The questionnaire consisted of 26 knowledge questions, which included 5 scales that covered key concepts of food safety and handling in households, and 7 demographic questions. The respondents demonstrated a very low level of knowledge and the mean score awarded to them was 7.95 (knowledge scores from 0 to 26). The data were further analyzed to determine differences in knowledge between populations of different demographics. Differences were found between male and female respondents (p < 0.01), urban and rural respondents (p < 0.01) and respondents with different income levels (p = 0.04). Two “high-risk” groups with the lowest level of knowledge are 1) male food handlers with a per capita annual income of less than 30,000 CNY (4773 USD) and 2) female food handlers who live in rural areas and have a per capita annual income below 30,000 CNY (4773 USD) and deserve special attention. This is the first national survey in Mainland China and the results suggested that developing educational programs related to food safety and handling in households of Mainland China are urgently needed.     

A generic model of the integrated food supply chain to aid the investigation of food safety breakdowns

Increasingly it is becoming important to study and manage aspects of food production in relation to the total food chain implications and not one stage in isolation. As part of a major UK Food Standards Agency (FSA) funded project on Breakdowns in Food Safety a novel generic model of the integrated food supply chain was described which attempts to break the chain into its component parts. A hierarchical approach has been used which describes three levels: 5 stages, 9 operational steps and a series of 27 unit operations, each of which have been defined. In addition, 21 types of “generic” breakdown have been identified which could occur at any stage of the food chain. This approach has been used to collect data from 8515 breakdowns in food safety.     

Street food on the coast of Salvador,Bahia, Brazil: A study from the socioeconomic and food safety perspectives

Street food includes various food items and drinks largely sold in public places, including leisure areas such as beaches. Despite the prevalence at this activity studies made within this scenario are few. Therefore, this study sought to characterize street food commercialization on the Salvador coast in Bahia, Brazil based on the socioeconomic, labor, and food safety perspectives. An exploratory and quantitative study was conducted on 14 beaches using questionnaires addressing the following areas: the socio-demographic characteristics of the food vendors, characteristics of the work, and hygienic and sanitary conditions of the activity. Our study included 247 food vendors with an average age of 40.3 years, of whom 55.9% were women, and 48.7% had completed an elementary education or less. The median time spent working in street food vending was nine years, and the average working day for the participants was 8.3 Furthermore, 46.2% of the participants worked only on weekends and 72.0% declared that their family income was between one and three times the minimum wage, of whom 29.1% had revenue from a source other than street food vending. Most of the vendor locations were fixed (57.5%), and the products sold were typically obtained from supermarkets (48.1%), suppliers (36.8%), and street markets (36.0%). Prepared food items were the most common (61.6%), although mineral water/soft drinks (35.8%) and beer (35.2%) were also commonly sold items, followed by acarajé (21.9%), coconut water (19.0%), fried fish (14.2%), and abará (12.5%). Only 38.3% of the perishable food items were kept in cooling containers. Of the interviewed individuals, 22.6% declared that they did not sanitize their hands when working, whereas 80.2% admitted to handling food and money simultaneously. Our study reveals the socioeconomic importance of the street food sector as well as the poor hygienic conditions of most street food vendor operations.     

Implementation of a food safety management system according to ISO 22000 in the food supplement industry: A case study

This work aims to present a methodology to carry out hazard and control measures assessments to properly establish operational prerequisite programmes (oPRPs) and the HACCP plan in the food supplement industry according to the ISO 22000 standard. This study focused on the manufacture of propolis, royal jelly and vitamin C ampoules, sold as energy boosters. Seven of the 13 hazards identified in this study were significant: two hazards were in the reception step (residues of pesticides, antibiotics and/or heavy metals (code 2) and contamination by pathogens (code 3)), two in the ingredients weighing step (cross-contamination by metabisulphite (code 9) and contamination by pathogens (code 10)), one in the mixture preparation step (contamination by pathogens and/or proliferation of microorganisms (code 11)) and two in the ampoule-filling and -sealing step (cross-contamination by metabisulphite (code 12) and contamination by pathogens (code 13)). After assessing the control measures, critical control points (CCPs) were determined in the hazards with codes 2, 9 and 12, which could be managed by an HACCP plan. The remaining hazards were managed by establishing oPRPs. Implementation of the ISO 22000 standard in the food supplement industry guarantees food safety and helps improve their competitiveness in the global market.     

A review of some methodological developments on full waveform inversion tackled in the SEISCOPE group

Full waveform inversion(FWI)is a data-fitting inverse problem aiming to delineate high-resolution quantitative images of the Earth.While its basic principle has been proposed in the eighties,the approach has been significantly developed and applied to2Dand 3Dproblems at various scales for the last fifteen years.Despite these successes,FWI is still facing some issues for applications in complex geological setups because of some lack of robustness and automatic workflow,while being computationally intensive.In this paper,after a short review of the basic FWI formulation and analysis of the FWI gradient,three recent methodological developments performed in the frame of the SEISCOPE project are presented.First,an algorithmic development is presented as a low-memory and computationally efficient approach for building the time-domain FWI gradient in 3Dviscous media.Second,a reformulation of FWI is performed to handle reflections in their tomography regime while still using the diving waves,leading to the joint full waveform inversion(JFWI)approach.Finally,an optimal transport approach is proposed as an alternative to the classical difference-based misfit for mitigating the cycle-skipping issue.     

Advances in biofilm control for food and beverage industry using organo-silane technology: A review

Cell adhesion can be a potential problem as well as a valuable tool for microbiological engineering. It can lead to biofouling, contamination of product and corrosion. On the other hand, cell adhesion is purposely employed in fermenters and bioreactors to influence reactor performance. This paper presents an overview of organo-functional silanes – their chemistry, properties, use, and the main laboratory experiments that can be of interest to the food and beverage industry. The purpose is to introduce and explore possibilities for using organo-silane combinations to enhance or reduce microbial adhesion.     

Improvement of the food safety of low acid fermented sausages by enterocins A and B and high pressure

Fermented sausage technology involves a sequence of hurdles that appear along the ripening process. A wide variety of fermented sausages are manufactured worldwide based on the concept of reduction of pH and/or water activity. In low acid fermented sausages the absence of high acidification can be balanced by the application of additional hurdles such as bacteriocins and/or high hydrostatic pressure (HHP). The addition of enterocins A and B to raw-sausages spiked with 3 log CFU/g of Salmonella, Listeria monocytogenes and Staphylococcus aureus showed an immediate reduction in the counts of L. monocytogenes due to the enterocins, while Salmonella was more affected by the endogenous hurdles associated with the ripening process. The application of an HHP treatment of 400 MPa at the end of ripening produced an immediate reduction in the counts of Salmonella but not in L. monocytogenes or S. aureus. During storage of the low acid sausages (fuets) at room temperature and at 7 °C, counts of Salmonella and L. monocytogenes progressively decreased in all batches although the decrease was faster in the pressurized ones stored at room temperature. At the end of storage, Salmonella was <1 log CFU/g in all the batches but only the combination of enterocins and HHP could reduce the counts of L. monocytogenes to this level. Neither the ripening process, the enterocins nor the pressurization could control the levels of S. aureus.