CAJ | 학술논문

以调和油和甘油二酯油为材料，对其在常温和高温条件下的氧化稳定性进行评价。对甘油二酯油和调和油在60℃和180oC持续加热过程中，酸价、过氧化值、羰基值的变化进行对比。结果表明，甘油二酯油在60℃持续加热36h过程中，酸价、过氧化值略有升高，但变化趋势不显著。在180℃加热3h条件下，随着加热时间的延长，甘油二酯油的酸价、过氧化值、羰基值均高于调和油，酸价变化不显著，过氧化值和羰基值呈逐渐升高趋势。甘油二酯油和调和油加热3h后，过氧化值分别达到14．08和6．97meq／kg，羰基值分别达到37．83和37．75meq／kg。甘油二酯油的热氧化稳定性与调和油相比容易发生氧化、酸败。
이조화유화감유이지유위재료，대기재상온화고온조건하적양화은정성진행평개。대감유이지유화조화유재60℃화180oC지속가열과정중，산개、과양화치、탄기치적변화진행대비。결과표명，감유이지유재60℃지속가열36h과정중，산개、과양화치략유승고，단변화추세불현저。재180℃가열3h조건하，수착가열시간적연장，감유이지유적산개、과양화치、탄기치균고우조화유，산개변화불현저，과양화치화탄기치정축점승고추세。감유이지유화조화유가열3h후，과양화치분별체도14．08화6．97meq／kg，탄기치분별체도37．83화37．75meq／kg。감유이지유적열양화은정성여조화유상비용역발생양화、산패。
The oxidative stability of blended oil and diacylglycerol were evaluated at room temperature and high temperature. Their acid value, peroxide value and carbonyl value were compared during continuous heating at 60 ℃and 180 ℃. The results showed that the acid value and peroxide value were a little high- er when diacylglycerol was heated at 60 ℃ for 36 h with unconspicuous trend. After continuous heating at 180 ℃ for 3 h , the acid value, peroxide value and carbonyl value of diacylglycerol were higher than those of blended oil with unconspicuous acid value change and gradually hoist trend for the peroxide value, carbonyl value. After heated for 3 h, the peroxide values of blended oil and diacylglycerol were 14.08 meq/kg and 6.97 meq/kg, carbonyl values were 37.83 and 37.75 meq/kg. These results suggested that diacylglycerol was oxidized easier then blended oil.