Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Physicochemical Characteristics of Powder from Cryogenic Grinding of Aronia, Grapefruit, Black Bean, and Germinated Brown Rice

동결분쇄에 따른 아로니아, 자몽, 서리태, 발아현미의 이화학적 특성

  • Received : 2017.12.20
  • Accepted : 2017.12.20
  • Published : 2017.12.28
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Abstract

We compared the ingredients present in freeze-dried ground food samples with those present in hot air-dried and ambient ground food samples to optimize processing conditions for preserving nutrients in and for improving the ingestion of different foods. The freeze-dried ground sample of black bean showed 4.57% higher retention rate than the ambient ground sample of black bean. Mineral content was also significantly different between these two samples. Moreover, the freeze-dried ground sample of black bean contained 11.54% higher content of ${\beta}$-carotene, a precursor of vitamin A, than the ambient ground sample of black bean. Total anthocyanin content was 453.49 mg in the freeze-dried ground sample of Aronia compared with 158.98 mg in the ambient ground sample of Aronia. Contents of ${\beta}$-carotene and niacin increased by 129.47% and 439.39%, respectively, in the freeze-dried ground sample of grapefruit. Retention rates of proteins, carbohydrates, and niacin were 107.74%, 103.87%, and 156.52%, respectively, in the freeze-dried ground sample of germinated brown rice. Protein digestibility increased by 120.5% and 101.14% in the freeze-dried ground samples of Aronia and black bean, respectively, but did not increase in the freeze-dried ground samples of grapefruit and germinated brown rice.

식품중의 영양성분을 잘 보존하고 섭취가 용이하며 소화가 잘 될 수 있는 가공방법의 최적화를 위하여 식품원료의 동결분쇄물과 일반분쇄물을 비교하였다. 단백질의 공급원으로 알려진 서리태는 동결분쇄한 것이 일반분쇄한 것에 비해 미세하나 에너지원으로서 영양성분 보존율(이하보존율)이 4.57% 높고, 미네랄은 큰 차이가 없었다. 특히, ${\beta}$-carotene의 경우, 동결분쇄가공분말에서 11.54% 높게 포함되어 있어 비타민 A의 전구물질인 공급에 유리함을 보였다. 아로니아의 총 안토시아닌은 동결분쇄가 453.49 mg으로 일반분쇄 158.98mg 보다 보존율이 높았다. 자몽에서 열에 약한 베타카로틴은 동결분쇄가 129.47%, 니아신은 439.39%로 동결분쇄가 보존율이 높았다. 발아현미는 동결분쇄에서 단백질, 탄수화물, 니아신이 107.74%, 103.87%, 156.52%로 각각 높았다. Protease에 의한 단백질 소화율은 일반분쇄에 비하여 아로니아가 120.5%, 서리태가 101.14%로 동결분쇄방법이 단백질 소화율이 높았다. 그러나, 자몽과 발아현미는 동결분쇄에서 94.06%와 93.14%로 소화율이 떨어졌다.

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References

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