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Application of carbon dioxide as a novel approach to eradicate poultry red mites
Jeong-Woo Kang,Md Akil Hossain,Jiyeon Jeong,Haechul Park,Jin-Hyun Kim,Min-Su Kang,Yong-Kuk Kwon,Yong-Sang Kim,Sung-Won Park 대한수의학회 2020 Journal of Veterinary Science Vol.21 No.2
Poultry red mites (PRMs), Dermanyssus gallinae, are one of the most harmful ectoparasites of laying hens. Because of their public health impact, safe, effective methods to eradicate PRMs are greatly needed. Carbon dioxide (CO2) was shown to eradicate phytophagous mites; however, there is no evidence that PRMs can be eradicated by CO2. Thus, the efficacy of CO2, applied by direct-spraying and dry ice-generated exposure, for eradicating PRMs was investigated. Both treatments eradicated > 85% of PRMs within 24 h and 100% of PRMs by 120 h of post-treatment. Therefore, these novel approaches may be useful for eradicating PRMs in clinical settings.
Jeong, Jiyeon,Lee, Jeeyeon,Lee, Heeyoung,Lee, Soomin,Kim, Sejeong,Ha, Jimyeong,Yoon, Ki-Sun,Yoon, Yohan ational Association for Food Protection 2017 Journal of food protection Vol.80 No.4
<B>ABSTRACT</B><P>This study evaluated the risk of Campylobacter foodborne illness caused by the intake of raw beef offal in South Korea. The prevalence of Campylobacter spp. in raw beef offal (liver and tripe) was investigated by plating samples on modified charcoal-cefoperazone-deoxycholate agar with Preston enrichment broth. Data were collected about storage temperature and length of storage of raw beef offal, and probabilistic distributions for the data were determined, using @RISK software. Predictive models were developed to describe the fate of Campylobacter in raw beef offal, and the amount and frequency of consumption and dose-response model were surveyed. Subsequently, these data were used to estimate the risk of Campylobacter foodborne illness caused by the intake of raw beef offal. Of 80 beef offal samples, 1 (1.25%) was contaminated with Campylobacter jejuni. Predictive models were used for exposure assessment. An exponential distribution was selected to represent beef offal consumption by people who eat this occasionally, with a mean of 60.2 g and 3.6% monthly consumption frequency. Simulations using @RISK predicted that the probability of Campylobacter foodborne illness per person per month is 1.56 × 10−5 for home consumption and 1.74 × 10−5 for restaurant consumption in South Korea, which indicates the risk of Campylobacter foodborne illness by intake of raw beef offal in South Korea.</P>
Jeong Kim,Yu-Jeong Gwak,Jiyeon Chun 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Vitamin B12 (cobalamins), one of the B vitamins, involves in important metabolism of all cells of the human body. The purpose of this study was to investigate the distribution of vitamin B12 content in commercial noodle dishes consumed as Home Meal Replacement (HMR) in Korea. Vitamin B12 in fourteen kinds of HMR noodles was analyzed as cyanocobalamin by using α-amylase enzyme extraction coupled with immunoaffinity HPLC/DAD. The recovery of vitamin B12 analysis was 104.3%, indicating good accuracy. Coefficient variations of repeatability and reproducibility for vitamin B12 analysis were 3.1% and 4.7%, respectively, showing good precision. The limit of detection and quantification of vitamin B12 analysis were 0.008 and 0.021 μg/100 g, respectively. Vitamin B12 of samples ranged from 0.00 (Mara tantanmyeon) to 0.65 μg/100 g (Tomb-Yang-Kung Yokai Ramen). The intake of vitamin B12 by commercial noodle dishes would meet 0.0-27.2% of the recommended daily amount of vitamin B12 (2.4 μg/day). This study provides reliable data on vitamin B12 variation of commercial noodles, which would be useful in evaluating the level of vitamin B12 intake through HMR dishes in Korea.
( Jiyeon Jeong ),( Jin-kyu Woo ),( Young Chul Park ),( Sukman Park ),( Su-hyun Yun ),( Yi Lee ),( Gun-hyoung Cho ),( Kwan Jeong Song ),( Ho Bang Kim ) 한국육종학회 2018 Plant Breeding and Biotechnology Vol.6 No.3
Regardless of the importance of a viral pathogen, citrus tristeza virus (CTV), in citrus industry, molecular marker tools closely associated with its resistance trait have not been developed yet. Map-based cloning of a Ctv locus, one of at least two CTV-resistant loci, was previously reported from trifoliate orange. The genetic locus displayed a distinct feature of enriched composition of R genes that encode coiled-coil-nucleotide-binding site-leucine-rich repeat (CC-NBS-LRR) receptors. Based on the previous molecular characteristics of the genetic locus, we developed multiplex PCR marker sets to specifically detect seven R genes consisting of a Ctv locus. By using the multiplex PCR marker sets, we determined composition of seven R genes consisting of the genetic locus in a total of 155 citrus genetic resources including 12 of Korean landrace citrus. Genetic composition of seven R genes in the locus was variable among the genetic resources investigated. However, all of seven R genes were detected only in both trifoliate orange, Poncirus trifoliata and its derivative cultivar, P. trifoliata ‘Flying Dragon’, which have been reported to be resistant to CTV. Multiplex PCR marker sets established in this study would be an effective molecular tool to develop scion or rootstock cultivars with high resistance trait against CTV in citrus breeding program.
A partially hydrolyzed whey formula provides adequate nutrition in high-risk infants for allergy
Jiyeon Yang,Song I Yang,Kyunguk Jeong,Kyung Won Kim,Yoon Hee Kim,Taek Ki Min,Bok Yang Pyun,Jeongmin Lee,Ji A Jung,Jeong Hee Kim,Sooyoung Lee 한국영양학회 2022 Nutrition Research and Practice Vol.16 No.3
BACKGROUND/OBJECTIVES: Hydrolyzed formula is often fed to infants with gastrointestinal or immune issues, such as malabsorption or cows milk allergy, because enzymatic treatment has rendered it more digestible and less allergenic than standard cows milk formula (SF). Partially hydrolyzed formula (PHF) should be considered for those infants who are intolerant to extensively hydrolyzed formula. However, there are concerns about the nutritional insufficiencies of PHF. We aimed to evaluate the effects of PHF on the growth and health indicators in infants who were at high-risk of allergic disease and potential candidates for consuming PHF. SUBJECTS/METHODS: A total of 83 infants aged 0–2 mon with a family history of allergies were assigned to consume either PHF or SF until 24 weeks of age. Anthropometric measures were obtained at baseline, 12 weeks, and 24 weeks; blood samples were drawn and evaluated at the end of the study. RESULTS: No significant differences were observed in weight, height, and weight-for-height at any time point in each sex between the PHF and SF groups. At 24 weeks of age, the weight-for-age and height-for-age z-scores of the SF group were higher than those of the PHF group, but there was no significant difference in the weight-for-height z-score. There were no significant differences in levels of white blood cells, hemoglobin, ferritin, protein, albumin, aspartate aminotransferase, alanine aminotransferase, eosinophil cationic protein, and immunoglobulin E. CONCLUSIONS: In this study, there were no differences in growth and blood panels between the infants consuming PHF or SF. Therefore, infants who are unable to tolerate SF can be fed PHF without nutritional concerns about growth.