Fatty Acid Composition of Grain- and Grass-Fed Beef and Their Nutritional Value and Health Implication

• 발행기관: 한국축산식품학회
• 저자명: Kim Margarette C. Nogoy Bin Sun Sangeun Shin Yeonwoo Lee Xiang Zi Li Seong Ho Choi Sungkwon Park
• 간행물 정보: 『Food Science of Animal Resources』Food Science of Animal Resources 제42권 제1호, 18~33쪽, 전체 16쪽
• 주제분류: 농수해양 > 식품과학
• 파일형태: PDF
• 발행일자: 2022.01.31

영문 초록

Beef contains functional fatty acids such as conjugated linoleic acid and longchain fatty acids. This review summarizes results from studies comparing the fatty acid composition of beef from cattle fed either grass or grain-based feed. Since functional lipid components are contributed through dietary consumption of beef, the fatty acid composition is reported on mg/100 g of meat basis rather than on a percentage of total fat basis. Beef from grass-fed contains lesser total fat than that from grain-fed in all breeds of cattle. Reduced total fat content also influences the fatty acid composition of beef. A 100 g beef meat from grass-fed cattle contained 2,773 mg less total saturated fatty acids (SFA) than that from the same amount of grain-fed. Grass-fed also showed a more favorable SFA lipid profile containing less cholesterol-raising fatty acids (C12:0 to C16:0) but contained a lesser amount of cholesterol-lowering C18:0 than grain-fed beef. In terms of essential fatty acids, grass-fed beef showed greater levels of trans-vaccenic acid and long-chain n-3 polyunsaturated fatty acids (PUFA; EPA, DPA, DHA) than grain-fed beef. Grass-fed beef also contains an increased level of total n-3 PUFA which reduced the n-6 to n-3 ratio thus can offer more health benefits than grain-fed. The findings signify that grass-fed beef could exert protective effects against a number of diseases ranging from cancer to cardiovascular disease (CVD) as evidenced by the increased functional omega- 3 PUFA and decreased undesirable SFA. Although grain-fed beef showed lesser EPA, DPA, and DHA, consumers should be aware that greater portions of grain-fed beef could also achieve a similar dietary intake of long-chain omega-3 fatty acids. Noteworthy, grain-fed beef contained higher total monounsaturated fatty acid that have beneficial roles in the amelioration of CVD risks than grass-fed beef. In Hanwoo beef, grain-fed showed higher EPA and DHA than grass-fed beef.

목차

Introduction

An Overview of the Feeding System in Korea, Australia, and the USA

Saturated Fatty Acid Composition of Grass-Fed and Grain-Fed Beef

Monounsaturated Fatty Acid Composition of Grass-Fed and Grain-Fed Beef

Polyunsaturated Fatty Acid Composition of Grass-Fed and Grain-Fed Beef

Regulation of Fatty Acid Composition according to Grass- and Grain-Feeding System

On-going Debate on Grass-Fed and Grain-Fed Beef

Conclusion

Conflicts of Interest

Acknowledgements

Author Contributions

Ethics Approval

References

키워드

beef fatty acids health grain grass