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정향동,원옥남,구경림,류성렬 한국공업화학회 2003 응용화학 Vol.7 No.2
Aflatoxin B₁was known to have the strongest poisonous character among Aflatoxn compounds. To search the production of Aflatoxin B₁according to the change of temperature and relative humidity, millet incubated with Aspergillus flavus KCCM 35078 was incubated at 20℃, 25℃, 30℃, 25℃ and at relative humidity 50%, 60%, 70% and for incubation time 72, 96, 120, 144, 168, 192 hours. Production of Aflatoxin B₁shows that the highest production appeared at 25℃ and its relative humidity 70%. The result that was quantitatively analyzed by using HPLC was 23.35ppm, and by using fluorescence detector was 23.50ppm Production of Aflatoxin B₁shows that the lowed production appeared at 20℃ and its relative humidity 50%. The result that was Quantitatively analyzed by using HPLC was 6,26ppm, and by using fluorescence detector was 6.33ppm The structure of Aflatoxin B₁was identify with authentic sample by using instrumental analysis methods of MS, H-NMR, FT-IR, respectively.
장향동,백광균,김태현,원옥남,류성렬 한국공업화학회 2002 응용화학 Vol.6 No.1
To search the production of aflatoxin B_1 according to the change of temperature and relative humidity, soya-beans incubated with aspergillus flavus KCCM 35078 was incubated at 25℃, 30℃ and at relative humidity 50%, 60%, 70% and for incubation time 3, 4, 5, 6, 7, 8days. Production of aflatoxin B_1 shows that the highest production appeared at 25℃ and its relative humidity 70%. The result that was quantitatively analyzed by using HPLC was 68.41ppm, and by using fluoroscence detector was 69.90ppm. Production of aflatoxin B_1 shows that the lowest production appeared at 30℃ and its relative humidity 50%. The result that was quantitatively analyzed by using HPLC was 25.96ppm, and by using fluoroscence detector was 26.67ppm. And so, production of aflatoxin B_1 was more product at 25℃, humidity 70% than 30℃, humidity 70%. The structure of aflatoxin B_1 have been identified on determination by using instrumental analysis methods of FT-IR, MS, ^1H-NMR, , respectively.
The studies on the Quantitative analyses of Aflatoxin B1 from Soya-beans
백광균,장향동,김태현,원옥남,류성렬 한국공업화학회 2002 한국공업화학회 연구논문 초록집 Vol.2002 No.0
To search the production of aflatoxin B1 according to the change of temperature and relative humidity, soya-beans incubated with aspergillus flavus KCCM 35078 was incubated at 25°C, 30°C and at relative humidity 50%, 60%, 70% and for incubation time 3, 4, 5, 6, 7, 8days. Production of aflatoxin B1 shows that the highest production appeared at 25°C and its relative humidity 70%. The result that was quantitatively analyzed by using HPLC was 68.41ppm, and by using fluoroscence detector was 69.90ppm. Production of aflatoxin B1 shows that the lowest production appeared at 30 °C and its relative humidity 50%. The result that was quantitatively analyzed by using HPLC was 25.96ppm, and by using fluoroscence detector was 26.67ppm. And so, production of aflatoxin B1 was more product at 25°C, humidity 70% than 30°C, humidity 70%. The structure of aflatoxin B1 have been identified on determination by using instrumental analysis methods of FT-IR, MS, 1H-NMR, respectively.