Effects of quality grade on fatty acid composition and melting points of different adipose tissues of Hanwoo steers

Sung Il Kim

doi:10.7744/kjoas.520205

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2025 Vol.52, Issue 2 Preview Page Next Page

Animal

Effects of quality grade on fatty acid composition and melting points of different adipose tissues of Hanwoo steers

1 June 2025. pp. 119-127

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Abstract

This study aimed to compare and analyze the changes in fatty acid composition and melting points in different adipose tissues, including M. longissimus dorsi, subcutaneous fat, and perirenal fat, according to quality grade in Hanwoo steers. In M. longissimus dorsi fat, the C_18:1 content was significantly higher (p < 0.05) in the 1⁺⁺ grade compared to the 2 grade. The 1⁺⁺ grade also exhibited the lowest (p < 0.05) saturated fatty acid (SFA) content and the highest (p < 0.05) unsaturated fatty acid (UFA) content among all quality grades. In subcutaneous fat, the 1⁺⁺ grade showed significantly higher (p < 0.05) levels of C_18:3 and polyunsaturated fatty acid (PUFA) compared to the other grades. The average UFA content in subcutaneous fat (66.60%) was 9.07% and 16.78% higher than that in M. longissimus dorsi (61.06%) and perirenal fat (57.03%), respectively. In perirenal fat, the average C_18:0 content was 16.54%, approximately two to four times higher than the average contents found in M. longissimus dorsi (9.15%) and subcutaneous fat (4.94%). Additionally, the PUFA content was significantly higher (p < 0.05) in the 1⁺⁺ grade than in the other quality grades. Furthermore, the melting points of adipose tissues were lowest in the order of subcutaneous fat (17.84 - 18.69℃), M. longissimus dorsi (25.36 - 27.36℃), and perirenal fat (29.13 - 35.70℃). Overall, these findings suggest that the fatty acid composition and melting points of Hanwoo steer adipose tissues vary depending on the fat depot and that higher quality grades are associated with increased UFA and PUFA levels.

Keywords

fatty acid composition

Hanwoo steers

melting point

quality grade

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Information

Publisher :Institute of Agricultural Science, Chungnam National University
Publisher(Ko) :충남대학교 농업과학연구소
Journal Title :Korean Journal of Agricultural Science
Journal Title(Ko) :농업과학연구
Volume : 52
No :2
Pages :119-127
Received Date : 2025-04-29
Revised Date : 2025-05-06
Accepted Date : 2025-05-14
DOI :https://doi.org/10.7744/kjoas.520205

Korean Journal of Agricultural Science ISSN:2466-2402(Print) 2466-2410(Online) 농업과학연구

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