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자료유형
학술저널
저자정보
(IPB University (Bogor Agricultural University)) (IPB University (Bogor Agricultural University)) (IPB University (Bogor Agricultural University)) (IPB University (Bogor Agricultural University))
저널정보
한국식품영양과학회 Preventive Nutrition and Food Science Preventive Nutrition and Food Science Vol.28 No.4
발행연도
수록면
386 - 400 (15page)

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초록· 키워드

Folate (vitamin B9) is an essential nutrient for cell metabolism, especially in pregnant women; however, folate deficiency is a major global health issue. To address this issue, folate-rich fermented foods have been used as alternative sources of natural folate. Lactic acid bacteria (LAB), which are commonly involved in food fermentation, can synthesize and excrete folate into the medium, thereby increasing folate levels. However, screening for folate-producing LAB strains is necessary because this ability is highly dependent on the bacterial strain. Some strains of LAB consume folate, and their presence in a fermentation mix can lower the folate levels of the final product. Since microorganisms efficiently regulate folate biosynthesis to meet their growth needs, some strains of folate-producing LAB can deplete folate levels if folate is available in the media. Such folate-efficient producers possess a feedback inhibition mechanism that downregulates folate biosynthesis. Therefore, the application of folate-overproducing strains may be a key strategy for increasing folate levels in media with or without available folate. Many studies have been conducted to screen folate-producing bacteria, but very few have focused on the identification of overproducers. This is probably because of the limited understanding of the regulation of folate biosynthesis in LAB. In this review, we discuss the roles of folate-biosynthetic genes and their contributions to the ability of LAB to synthesize and regulate folate. In addition, we present various hypotheses regarding the regulation of the feedback inhibition mechanism of folate-biosynthetic enzymes and discuss strategies for obtaining folate-overproducing LAB strains.
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목차

  1. ABSTRACT
  2. INTRODUCTION
  3. FOLATE-PRODUCING LAB
  4. DE NOVO FOLATE BIOSYNTHESIS PATHWAY AND GENE REGULATION
  5. FOLATE SALVAGE PATHWAY
  6. FOLATE-EFFICIENT BACTERIA
  7. FOLATE-OVERPRODUCING BACTERIA
  8. FOLATE OVERPRODUCTION BY CHEMICAL ANALOG STRESS RESISTANCE
  9. FOLATE OVERPRODUCTION BY GENETIC ENGINEERING
  10. REFERENCES

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