Yaohua Feng

Dr. Yaohua Feng


Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2019 in Journal of Food Protection
Verified
Journal Article
Closed access
YFYaohua Feng
Yaohua Feng
CBChristine M. Bruhn
Christine M. Bruhn
Temperature control prevents the rapid growth of foodborne pathogens during food storage and assures adequate heating to destroy pathogens prior to consumption. The use of thermometers is a recognized best practice among consumer and food worker guidelines; however, compliance with this recommendation is quite low. Eighty-five studies from the past 21 years were reviewed and an analyzed for the knowledge, attitudes, and behaviors associated with thermometer use and the motivators and barriers to cooking and refrigerator thermometer use among consumers and food workers. Barriers to thermometer were categorized into two major groups: “the belief that a thermometer is not necessary” and “the difficulty of selecting and using a thermometer.” Each group has its unique aspects. Four barriers were recognized in the “not necessary” group: (i) preference for alternative techniques, (ii) mainstream media and food professionals seldom serve as role models and often negate the need for food thermometers, (ii...

1 July 2021 in Journal of Food Protection
Verified
Journal Article
Closed access
PDF file
MTMerlyn S. Thomas
Merlyn S. Thomas
YFYaohua Feng
Yaohua Feng
At present, SARS-CoV-2 has not been shown to be transmitted through food, even so the COVID-19 pandemic has changed how consumers view food and food safety. This study assessed consumer food safety practices during the COVID-19 pandemic using (1) surveys and (2) online focus group discussions. From April to August 2020, five waves of surveys were distributed to an online U.S. consumer panel and screened to include only primary food preparers and grocery shoppers. The online focus groups were conducted via WebEx from May to July 2020. Focus group participants were recruited from the first wave of survey respondents. Both survey respondents and focus group participants reported higher levels of handwashing in response to the pandemic. However, survey participants’ anticipated levels of handwashing after the pandemic decreased; some focus group participants noted that human nature “kicking in” could lead to lower levels of hand hygiene practice. For each of the five months, the survey reported increased produce washing, both with water only and with water plus soap. Most focus group participants mentioned using water to wash their produce, but some reported using soap and even vinegar to “kill” the virus. Since consumers were worried that SARS-Cov-2 could survive on food, they started to mishandle food to address these concerns. However, this study also reported an increase in food thermometer use during the pandemic. Social determinants like gender, income, education, and age may have also influenced changes in levels of practice throughout the pandemic. The COVID-19 pandemic drove consumers to practice proper and improper food safety practices, which may or may not continue after the pandemic. This study’s findings provide timely information to guide future food safety education and communication during health crises and pandemics.

1 April 2021 in Journal of Food Protection
Verified
Journal Article
Open access
PDF file
YFYaohua Feng
Yaohua Feng
JAJuan C. Archila-Godínez
Juan C. Archila-Godínez
Consumers do not consider flour, a low-moisture food product, a high-risk for microbial contamination. In the past ten years, however, flour has been identified as a source of pathogenic bacteria, including Salmonella and E. coli . Online surveys were conducted to study consumers’ flour-handling practices and their knowledge about food safety risks related to flour. The survey also evaluated message impact on three food safety messages in communicating information and convincing consumers to adopt safe flour handling practices. Flour-using consumers (n = 1,045) from the United States reported they used flour to make cakes, cookies, and bread. Most consumers stored flour in sealed containers. Less than 1% kept a record of product identification numbers, like lot numbers, and less than 11% kept brand and use-by-date information. Many consumers (85%) were unaware of flour recalls, or outbreaks, and few (17%) believed they would be affected by flour recalls or outbreaks. If the recall affected the flour they bought, nearly half of the consumers (47%) would buy the same product from a different brand for a few months before they returned to the recalled brand. Among consumers who use flour to bake, 66% said they ate raw cookie dough or batter. Raw dough “eaters” were more difficult to convince to avoid eating and playing raw flour than “non-eaters.” Food safety messages were less impactful on those raw dough “eaters” than “non-eaters.” Compared with the food safety message with only recommendations, those messages with recommendations and an explanation as to the benefits of the practice were more effective in convincing consumers to change their practices. These findings provide insight into effective consumer education about safe flour-handling practices and could assist in the accurate development of risk assessment models related to flour handling.

1 November 2020 in Journal of Food Protection
Verified
Journal Article
Closed access
PDF file
MTMerlyn Thomas
Merlyn Thomas
YFYaohua Feng
Yaohua Feng
Pet food has been identified as a source of pathogenic bacteria, including Salmonella and Escherichia coli. A recent outbreak linked to Salmonella -contaminated pet treats infected over 150 people in the United States. The mechanism by which contaminated pet food leads to human illness has not been explicated. Pet owners’ food safety knowledge and their pet food handling practices have not been reported. This study evaluated pet owners’ food safety knowledge and pet-food handling practices through an online consumer survey. The survey consists of 62 questions and assesses (1) owners’ food safety knowledge and pet-food handling practices; (2) owners’ interaction with pets; (3) owners’ risk perception related to their own health, their children’s health, and their pets’ health. The survey was pilot-tested among 59 pet owners before distribution to a national consumer panel, managed by Qualtrics XM. All participants (n=1,040) were dog and/or cat owners in the United States. Almost all pet owners interacted with their pets (93%) and most cuddled, allowed their pets to lick them, and slept with their pets. Less than one-third of pet owners washed their hands with soap after interacting with their pets. Over half (58%) the owners reported washing their hands after feeding their pets. Most pet owners fed their pets dry pet food and dry pet treats. Some fed their pets raw meat or raw animal product (RAP) diets because they believed these diets to be beneficial to their pet’s overall health. Many owners (78%) were unaware of pet food recalls or outbreaks associated with foodborne pathogens. Less than 25% considered dry pet foods and treats as a potential source of foodborne pathogens. The findings of this study indicated the need for consumer education about pet food handling. The data collected can assist in developing more accurate risk assessment models and consumer education related to pet food handling.

26 January 2022 in Foods
Verified
Journal Article
Open access
PDF file
JGJuan Carlos Archila Godínez
Juan Carlos Archila Godínez
HCHan Chen
Han Chen
LKLeah Klinestiver
Leah Klinestiver
LRLia Rosa
Lia Rosa
TBTressie Barrett
Tressie Barrett
YFYaohua Feng
Yaohua Feng
Low-income families are reported to have a limited knowledge of food safety and resources to follow food safety practices compared with the rest of the population. This paper evaluated a virtual food safety educational program targeting food handlers in low-income families. Trained native speakers of English and Spanish delivered course materials in both languages. A total of 60 individuals participated in the program, with 30 participants in each language group. Most were female, and most had fewer than three children. After the program, participants’ food safety knowledge and self-reported safe food practice behavior scores increased significantly from 5.32 to 7.43 (out of 8.00) and from 24.78 to 29.30 (out of 35.00), respectively. The theory of planned behavior (TPB) was used to understand individuals’ behavior change intention of food safety practices. All the TPB constructs’ scores, including attitudes toward the behavior, perceived behavioral control, subjective norms, and behavior change intentions, were improved significantly; however, only the subjective norms and perceived behavioral control were significantly correlated with the behavior change intentions. This virtual educational program improved low-income individuals’ food safety knowledge and changed their food safety attitudes and behaviors, giving a path to develop and evaluate more virtual food safety educational programs in the future.