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국내산과 수입산 송이의 다량 및 미량 미네랄 함량 비교
정희경,김경제,서경순,진성우,고영우,임승빈,하늘이,김중범,Jeong, Hee-Gyeong,Kim, Kyung-Je,Seo, Kyoung-Sun,Jin, Seong-Woo,Koh, Young-Woo,Im, Seung-Bin,Ha, Neul-I,Kim, Jung-Beom 한국식품위생안전성학회 2022 한국식품위생안전성학회지 Vol.37 No.5
The mineral content of Tricholoma matsutake was evaluated for comparison of mineral contents according to the area of cultivation. Ten domestic and thirty Chinese (10 Yanji, 10 Yunnan and 10 Tibet) T. matsutake specimens were assessed using an atomic absorption spectrophotometer (AAS) and inductively coupled plasma mass spectrometer (ICP-MS). The Na, Mg, K, and Ca contents of domestic T. matsutake were 128.12±85.25 mg/kg, 218.52±105.35 mg/kg, 7,534.58±2,691.52 mg/kg, and 17.69±7.14 mg/kg, respectively, while those of Yanji T. matsutake were 124.89±57.24 mg/kg, 64.07±27.52 mg/kg, 1,439.18±311.04 mg/kg, and 10.88±4.52 mg/kg, respectively. The Na, Mg, K, and Ca contents of Yunnan T. matsutake were 90.78±23.23 mg/kg, 77.40±28.36 mg/kg, 1,446.29±126.33 mg/kg, and 28.42±5.18 mg/kg respectively, while those of Tibet T. matsutake were 143.50±41.54 mg/kg, 124.64±50.18 mg/kg, 3,530.95±2,714.99 mg/kg, and 21.05±8.71 mg/kg, respectively. The Cu contents of domestic, Yanji, Yunnan, and Tibet T. matsutake were 105.43±32.97 mg/kg, 19.92±8.95 mg/kg, 54.51±16.91 mg/kg, and 64.80±23.01 mg/kg, respectively. Both domestic and Chinese T. matsutake samples showed significantly different K, Mg, and Cu levels in this study. Therefore, a comparative evaluation of the K, Mg, and Cu contents of multiple domestic and Chinese T. matsutake varieties is needed to determine the appropriate area of cultivation in the future.
전통 누룩으로부터 분리된 Killer Toxin 생산 균주 Pichia anomala K15의 특성
정희경,박치덕,이기동,박승춘,박환희,홍주헌,Jung, Hee-Kyoung,Park, Chi-Duck,Lee, Gee-Dong,Park, Seung-Chun,Park, Hwan-Hee,Hong, Joo-Heon 한국식품영양과학회 2007 한국식품영양과학회지 Vol.36 No.8
본 연구에서는 발효식품의 저장기간을 연장하거나 이상발효를 방지하기 위해 미생물 유래의 천연 항균성 물질인 killer toxin 생산 균주인 K3, K5, K11, K12, K15를 전통누룩으로부터 분리하였다. 분리된 killer toxin 생산 균주 중 식중독의 원인균인 Salmonella Typhimurium 및 장염비브리오의 원인균인 Vibrio parahaemolyticus의 생육을 저해하며, killer toxin 활성이 가장 우수한 K15를 최종 선발하고 이를 Biolog사 동정시스템과 ITS영역의 염기서열 homology를 조사하여 동정한 결과, Pichia anomala에 99% 상동성을 나타내어 Pichia anomala K15로 명명하였다. P. anomala K15가 생산하는 killer toxin은 단백질 분해효소에 의해 불활성화 되므로 인체에서 단백질 분해효소에 의해 쉽게 분해가 가능한 안전한 항균물질임을 확인할 수 있었다. 또한 p. anomala K15는 에탄올 내성은 약하나 고농도의 당에서 저항성이 크므로 주조 발효초기 환경에서의 이상발효를 방지할 수 있을 것으로 사료되어진다. In this study, killer yeasts were isolated from traditional Nuruk to improve storage and suppress contaminant in food industry. Among killer yeasts, yeast K15 showed strong killer toxin activity and inhibited growth of Salmonella Typhimurium and Vibrio parahaemolyticus. Killer yeast K15 was identified with Pichia anomala by the Microlog TM 4.0 identification system and homology of the ITS sequence. Killer toxin generated from P. anomala K15 was inactivated by pronase E and suggested to be a protein. Therefore killer toxin of P. anomala K15 was thought to be safe in human such as bacteriocin. P. anomala K15 was sufficient for growth in 50% glucose and could be used to prevent contaminant in initial stages of alcohol beverage fermentation.
정희경,김경제,서경순,진성우,고영우,임승빈,하늘이,김중범,Jeong, Hee-Gyeong,Kim, Kyung-Je,Seo, Kyoung-Sun,Jin, Seong-Woo,Koh, Young-Woo,Im, Seung-Bin,Ha, Neul-I,Kim, Jung-Beom 한국버섯학회 2021 한국버섯학회지 Vol.19 No.1
국내산과 중국산 능이에 대한 다량미네랄, 미량미네랄 및 유해중금속 함량을 비교하여 원산지 판별 가능성을 분석하고자 하였다. 능이의 미네랄 함량은 원자흡광광도계(Atomic absorption spectrophotometer, AAS) 및 유도결합플라즈마 질량분석기(Inductively coupled plasma mass spectrometer, ICP-MS)를 사용하여 분석하였다. 국내산 능이의 Na, Mg, K 및 Ca 함량은 각각 170.3±44.0 mg/kg, 81.3±20.8 mg/kg, 1,123.8±274.3 mg/kg 및 12.1± 4.1 mg/kg으로 분석되었으며, 중국산 능이는 각각 112.2±40.8 mg/kg, 297.8±20.9 mg/kg, 10,938.4±2,914.1 mg/kg 및 52.5±27.7 mg/kg으로 분석되어 유의적 차이가 있는 것으로 나타났다. 미량미네랄 및 유해중금속 함량은 유의적 차이가 나타나지 않았다. 따라서 능이의 원산지 판별 지표 확립을 위하여 향후 다수의 국내산 및 중국산 능이를 사용한 Na, Mg, K 및 Ca 함량 비교분석이 필요한 것으로 판단되었다. The mineral contents of domestic and Chinese Sarcodon aspratus were analyzed for comparing the differences in the mineral contents according to the production sites. The mineral contents of 10 domestic and 10 Chinese S. aspratus were analyzed by using an atomic absorption spectrophotometer and an inductively coupled plasma mass spectrometer. The sodium, magnesium, potassium, and calcium contents of domestic S. aspratus were 170.3±44.0 mg/kg, 81.3±20.8 mg/kg, 1,123.8±274.3 mg/kg, and 12.1±4.1 mg/kg, respectively, while those of Chinese S. aspratus were 112.2±40.8 mg/kg, 297.8±20.9 mg/kg, 10,938.4±2,914.1 mg/kg, and 52.5±27.7 mg/kg, respectively. There were no significant differences in the micro mineral contents and hazardous heavy metal contents between domestic and Chinese S. aspratus, while there was a significant difference in the macro mineral contents between domestic and Chinese S. aspratus. Thus, the comparative analyses of the sodium, magnesium, potassium, and calcium contents of many domestic and Chinese S. aspratus are required to determine their production sites in the future.
Rat에서 Paenibacillus polymyxa JB115의 병원성 및 ${\beta}$-glucan 함유 배양산물에 대한 단회 경구독성시험
정희경,강은희,챵즐치앙,홍주헌,김상달,박병권,윤효인,박승춘,Jung, Hee-Kyoung,Kang, Eun-Hee,Chang, Zhi-Qiang,Hong, Joo-Heon,Kim, Sang-Dal,Park, Byung-Kwon,Yun, Hyo-In,Park, Seung-Chun 대한수의학회 2007 大韓獸醫學會誌 Vol.47 No.4
This study was conducted to investigate the pathogenicity of Paenibacillus (R) polymyxa JB 115 and single oral dose toxicity of culture broth containing (${\beta}$-glucan (CBG-JB 115) produced from P. polymyxa JB 115 in Sprague-Dawely rats of both sexes for 14 days. After oral administration of P. polymyxa JB 115 into rats, we could not find any abnormal clinical signs and variation in the body weight and temperature as compared with control group. We also investigated the acute toxicity of CBG-JB 115. As the results, there were no clinical signs and variance in the body weight and temperature related with CBG-JB 115 in comparison with the control group. From the this experiment, we could not find out any significant pathogenicity and toxicity induced by P. polymyxa JB 115 or by CBG-JB 115. Results of this study demonstrated that consumption of P. polymyxa JB 115 and its culture broth containing (${\beta}$-glucan was not associated with any obvious signs of toxicity in Sprague-Dawely rats even following consumption of large quantities.