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Preparation of enzymatic hydrolysate from defatted perilla seed residue and its application to Leuconostoc mesenteroides cultivation

탈지 들깨박 효소분해물의 제조와 Leuconostoc mesenteroides 배양에의 활용

  • Shin, Yeung Sub (Department of Chemical Engineering, Chungwoon University) ;
  • Lee, Tae Jung (Department of Chemical Engineering, Chungwoon University) ;
  • In, Man-Jin (Department of Chemical Engineering, Chungwoon University) ;
  • Kim, Dong Chung (Department of Chemical Engineering, Chungwoon University)
  • Received : 2021.01.12
  • Accepted : 2021.02.23
  • Published : 2021.03.31

Abstract

In this study, enzymes were screened for hydrolysis of defatted perilla seed residue (DPSR) and optimal conditions for enzymatic treatment were determined to produce the hydrolysate of DPSR. Also its antioxidant activity and utilization as a culture medium were examined. The combined treatment of Alcalase and Ceremix is most effective for solubilization of protein and carbohydrate in DPSR. The optimal dosage, pH, and reaction time for enzymatic treatment were found to be 2.0% (w/w), 7.0, and 2 h, respectively. Treatment with optimal conditions of enzymes dramatically increased reducing sugar, soluble protein, and total phenolic content. The hydrolysate of DPSR possessed better scavenging activity against cation and free radicals than enzyme-untreated extract. When Leuconostoc mesenteroides 310-12 was cultured in the hydrolysate of DPSR, cell population rapidly increased compared to enzyme-untreated extract, and titratable acidity increased in proportion to the bacterial growth. In conclusion, these results imply that the hydrolysate of DPSR could be utilized as a bacteria culture medium as well as a physiologically active material with antioxidant activity.

본 연구에서는 들깨(Perilla frutescens)박으로부터 효소분해물을 제조하기 위한 효소를 선별하여 최적의 반응조건을 확립하였다. Alcalase와 Ceremix의 동시 처리가 들깨박의 단백질과 탄수화물의 가용화에 효과적이었으며, 효소 사용량은 들깨박 중량의 2% (w/w), pH는 7.0, 반응 시간은 2시간이 적당하였다. 최적의 반응조건에서 들깨박을 Alcalase와 Ceremix로 처리한 결과 환원당, 가용성 단백질 및 총 폴리페놀 함량이 크게 증가하였다. 유리 라디칼과 양이온 라디칼에 대한 소거활성으로 확인한 결과 들깨박 효소분해물의 항산화 활성은 대조군에 비해 우수하였다. 또한 젖산균인 Leuconostoc mesenteroides 310-12 균주를 들깨박 효소분해물에서 배양한 결과 대조군에 비해 생육과 산의 생성이 우수하였다. 결론적으로 들깨박 효소분해물은 항산화 생리활성 소재로서뿐만 아니라 유산균 배양 배지로서도 활용 가능성이 있음을 확인하였다.

Keywords

References

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