시판 국내산 및 수입산 통밀(Triticum aestivum L.)의 영양성분 및 항산화 활성 비교

국문 초록 (Abstract)

본 연구에서는 우리나라에서 생산되고 있는 국내산 통밀과 미국에서 수입된 수입산 통밀의 일반성분 및 영양성분, 항산화 활성을 조사하여 원산지에 따른 차이를 비교하고 평가하였다. 국내산 및 수입산 통밀은 수분과 탄수화물을 제외한 모든 성분이 국내산 통밀에서 높게 측정되었다. 특히 조회분과 식이섬유는 각각 1.2배 이상의 차이를 보였으며, 조단백질과 조지방 함량 또한 각각 P<0.01 수준에서 유의한 차이를 나타내었다. 통밀의 아미노산 중 글루탐산의 함량은 국내산과 수입산 각각 3.75%와 3.12%로 전체의 약 30% 이상을 차지하였으며, 국내산이 수입산보다 약 1.2배 높았다. 또한 셀레늄을 제외한 칼슘, 구리, 철, 칼륨, 마그네슘, 나트륨 및 아연 모두 국내산 통밀이 수입산 통밀보다 유의적으로 높은 함량을 보였다(P<0.01). 총 포화지방산, 총 불포화지방산함량 또한 국내산 통밀이 수입산 통밀보다 더 높았으며, 총 지방산에 대한 불포화지방산의 비율 또한 국내산 통밀과 수입산 통밀 각각 78.12%, 75.01%로 유의적인 차이를 보였다(P<0.01). 총 폴리페놀 및 플라보노이드는 국내산 통밀 메탄올 추출물이 각각 1,354.62 mg GAE/g, 65.69 mg QE/g으로 가장 높은 함량을 보였으며, 다른 추출물과 유의적인 차이를 나타내었다(P<0.05). DPPH 라디칼과 ABTS 라디칼 모두 물 추출물에서는 수입산 통밀이, 메탄올 추출물에서는 국내산 통밀이 높은 소거 활성을 나타내었다. 특히 25 mg/mL 농도의 메탄올 추출물에서는 국내산 및 수입산 통밀의 DPPH 라디칼 소거 활성이 각각 91.93%, 45.95%로 2배 이상의 차이를 나타내었다. 이러한 결과는 국산 통밀의 자급률 증가와 품질 향상을 위한 기초자료로 활용할 수 있을 것으로 기대된다.

다국어 초록 (Multilingual Abstract)

In this study, the proximate compositions, nutritional components, and antioxidant properties of Korean and imported whole wheat were examined and compared. The crude ash, crude protein, crude lipid, and dietary fiber contents were higher in Korean whole wheat than in imported whole wheat, whereas the moisture and carbohydrate levels were lower. In particular, the crude ash and dietary fiber content differed by more than 1.2 times, and the crude protein and crude lipid content were also significantly different at the P<0.01 level. The glutamic acid contents of Korean and imported whole wheat were 3.75% and 3.12%, respectively, and comprised more than 30% of the total amino acid content, and the glutamic acid content of Korean whole wheat was 1.2 times higher than that of imported whole wheat. In addition, calcium (Ca), copper (Cu), iron (Fe), potassium (K), magnesium (Mg), sodium (Na), and zinc (Zn) levels of Korean whole wheat were significantly higher than those of imported whole wheat (P<0.01). The total saturated and unsaturated fatty acid contents were also higher in Korean whole wheat than in imported whole wheat. The ratio of unsaturated fatty acid to total fatty acid of Korean and imported whole wheat were 78.12% and 75.01%, respectively, which showed a significant difference (P<0.01). The total polyphenol and flavonoids contents of the 80% methanol extract from Korean whole wheat were 1,354.62 mg gallic acid equivalents/g and 65.69 mg quercetin equivalents/g, respectively. 2,2-Diphenyl-1-picrylhydrazyl radical scavenging activity of the methanol extract from Korean whole wheat (91.93%) was found to be more than twice that of the methanol extract from imported whole wheat (45.95%). These results are expected to be used as basic data for increasing the self-sufficiency and quality of Korean whole wheat.

목차 (Table of Contents)

• ABSTRACT
• 서론
• 재료 및 방법
• 결과 및 고찰
• 요약
• REFERENCES

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