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다양한 자외선(UVB) 처리조건에 의한 목이버섯의 품질 특성

Quality Characteristics of Ear Mushroom by Various UVB (Ultraviolet B) Treatment Conditions

  • Choi, So-Ra (Jeollabukdo Agricultural Research & Extension Services) ;
  • Shin, So-Hee (Jeollabukdo Agricultural Research & Extension Services) ;
  • Song, Young-Eun (Jeollabukdo Agricultural Research & Extension Services) ;
  • Han, Hyun-Ah (Jeollabukdo Agricultural Research & Extension Services) ;
  • Lee, Song-Yee (Jeollabukdo Agricultural Research & Extension Services) ;
  • Song, Eun-Ju (Jeollabukdo Agricultural Research & Extension Services)
  • 투고 : 2019.09.24
  • 심사 : 2019.11.05
  • 발행 : 2019.12.31

초록

To examine the possibility of ear mushroom (EM) as a source of natural vitamin D, the UVB (ultraviolet B) was treated according to sample drying status, drying methods before UVB treatment and harvest time. And then, vitamin D2 and ergosterol contents were investigated. According to the sample drying status, the vitamin D2 contents of fresh and freeze-dried EM (whole) increased to 4,634.4~4,780.9 ㎍/100 g D.W. (dry weight) under UVB dose 52.5~70.0 kJ/㎡ and above 18,693.1 ㎍/100 g D.W. under above 105 kJ/㎡, respectively. By drying methods before UVB treatment, vitamin D2 contents of EM powder (below 500 ㎛) that dried in the vinyl house and freeze-dryer increased to 4,886.2~5,132.9 ㎍/100 g D.W. under above 105 kJ/㎡ and 17,103.7 ㎍/100 g D.W. under 70 kJ/㎡, respectively. Ergosterol content decreased with increasing UVB dose in all experiments. According to the harvest time, vitamin D2 content under UVB dose 210 kJ/㎡ showed marked difference and in order of June, July, August, October and April. As for the results, the optimum harvest time, drying method before UVB treatment, sample size, UVB dose for the EM contained high vitamin D2 content were June, freeze-drying, whole, and 105 kJ/㎡, respectively.

키워드

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