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KMID : 1024620200400040467
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Food Science of Animal Resources
2020 Volume.40 No. 4 p.467 ~ p.511
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Comparison of Storage Stability, Volatile Compounds and Sensory Properties between Coarsely-and Finely-Marbled 1+ Grade Hanwoo Beef Loins
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Cho Soo-Hyun
Lee Wang-Yeol
Seol Kuk-Hwan
Kim Yun-Seok
Kang Sun-Moon
Seo Hyun-Woo
Jung Youn-Bok
Kim Jin-Hyoung
Ba Hoa Van
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Abstract
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This study aimed at comparing the storage stability, fatty acids profile, volatile flavor compounds and eating quality of Hanwoo beef longissimus thoracis (LT) muscles between two marbling morphological groups (fineness and coarseness). The 1+ grade Hanwoo LT muscles were measured for marbling fleck morphology at the 13th thoracic vertebrae location by using computerized image analysis. Results reveal that both marbling groups had similar proximate composition (protein, fat, moisture and collagen), color and technological quality traits (p>0.05). However, the coarse marbling group presented greater C18:2n6 and polyunsaturated fatty acids contents compared to the fine marbling group (p<0.05). Furthermore, the fine marbling group presented lower volatile basic nitrogen (VBN) and 2-thiobarbituric acid reactive substance (TBARS) contents compared to the coarse marbling group after 14 d storage (p<0.05). Also, higher amounts of C18:2n6 oxidation-derived volatile compounds such as hexanal and 3-ethyl-2-methyl-1,3-hexadiene, were found in the coarse marbling group. In term of sensory aspects, the finely-marbled group received higher scores of flavor and taste compared to the coarse marbling group (p<0.05). Overall, the marbling flecks morphology partially showed its effects on the storage stability, fatty acids profile and eating quality of the 1+ grade Hanwoo beef LT muscle.
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KEYWORD
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marbling morphology , Hanwoo beef , flavor compound , eating quality
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