수분함량과 저장온도에 따른 배합사료의 지방산화 및 지방산 조성 변화 (The Changes of Lipid Oxidation and Fatty Acid Composition of Extruded Pellet Feed by Dietary Moisture Level and Storage Temperature)

서지정보

· 발행기관 : 한국양식학회
· 수록지 정보 : 한국양식학회지 / 21권 / 4호 / 226 ~ 233페이지
· 저자명 : 장미순, 김경덕, 김강웅, 이종윤, 강용진

초록

This study investigated the effects of dietary moisture level and storage temperature on lipid oxidation and fatty
acids composition of the extruded pellet feed. The diets containing the moisture levels of 5%, 15% and 25% were
prepared by adding moisture (water) to the commercial extruded pellets and stored at 5oC, 20oC (room temperature)
and 35oC. The samples for analysis were collected at every 2 days for 10 days. Acid value (AV), peroxide
value (POV), 2-thiobarbituric acid (TBA) value and fatty acid composition of the feeds were measured. No differences
in the AV, POV and TBA value were observed in feed containing 5% moisture at all storage temperatures
for 10 days. However, the AV, POV and TBA value of diets containing 15% and 25% moisture increased rapidly
at 20oC and 35oC after 4 days. Fatty acids compositions of feeds containing 5% moisture did not change during
the storage periods at 5oC and 20oC. However, 5% moisture feed stored at 35oC increased monoene fatty acid content
and decreased the contents of polyene fatty acid, PUFA (polyunsaturated fatty acid)/SFA (saturated fatty acid)
and (C20:5+C22:6)/C16:0 after 4 days. Also, 15% moisture feed stored at 35oC showed increased monoene fatty acid
content and decreased (C20:5+C22:6)/C16:0 after 2 days. The diet containing 25% moisture showed increased monoene
fatty acid content and decreased contents of PUFA, PUFA/SFA and (C20:5+C22:6)/C16:0 at all temperatures after 2
days. In this study, lipid oxidation can occur in the extruded pellet feeds of 15% and 25% moisture at room temperature
after 2 days.

영어초록

This study investigated the effects of dietary moisture level and storage temperature on lipid oxidation and fatty
acids composition of the extruded pellet feed. The diets containing the moisture levels of 5%, 15% and 25% were
prepared by adding moisture (water) to the commercial extruded pellets and stored at 5oC, 20oC (room temperature)
and 35oC. The samples for analysis were collected at every 2 days for 10 days. Acid value (AV), peroxide
value (POV), 2-thiobarbituric acid (TBA) value and fatty acid composition of the feeds were measured. No differences
in the AV, POV and TBA value were observed in feed containing 5% moisture at all storage temperatures
for 10 days. However, the AV, POV and TBA value of diets containing 15% and 25% moisture increased rapidly
at 20oC and 35oC after 4 days. Fatty acids compositions of feeds containing 5% moisture did not change during
the storage periods at 5oC and 20oC. However, 5% moisture feed stored at 35oC increased monoene fatty acid content
and decreased the contents of polyene fatty acid, PUFA (polyunsaturated fatty acid)/SFA (saturated fatty acid)
and (C20:5+C22:6)/C16:0 after 4 days. Also, 15% moisture feed stored at 35oC showed increased monoene fatty acid
content and decreased (C20:5+C22:6)/C16:0 after 2 days. The diet containing 25% moisture showed increased monoene
fatty acid content and decreased contents of PUFA, PUFA/SFA and (C20:5+C22:6)/C16:0 at all temperatures after 2
days. In this study, lipid oxidation can occur in the extruded pellet feeds of 15% and 25% moisture at room temperature
after 2 days.

참고자료

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