표제지
목차
국문초록 13
I. 서론 15
II. 실험재료 및 방법 17
1. 실험재료 17
1.1. 시료 17
1.2. 시약 17
2. 실험방법 17
2.1. 식물성 유지의 이화학적 특성 17
2.2. 식물성 유지의 산화 안정성 측정 20
2.3. 식물성 유지의 관능적 특성 분석 21
2.4. 통계처리 23
III. 실험결과 및 고찰 24
1. 식물성 유지의 이화학적 특성 결과 24
1.1. 산소유도기간(induction time) 24
1.2. 지방산 조성 변화 25
1.3. 총 phytosterol 함량 변화 27
1.4. 총 tocopherol 함량 변화 36
2. 식물성 유지의 산화안정성 측정 결과 45
2.1. 갈변화 45
2.2. DPPH 라디칼 소거능 46
2.3. 산가(acid value) 47
2.4. 과산화물가(peroxide value) 48
2.5. 점도 49
3. 식물성 유지의 관능적 특성 분석 결과 50
3.1. 색도 50
3.2. Total polar compound (TPC) 52
3.3. 휘발성 향기성분(SPME) 53
3.4. Sniffing test(후각측정) 62
3.5. E-nose 70
3.6. E-tongue 71
참고문헌 75
ABSTRACT 83
Table 1. Operating condition of fatty acid analysis in vegetable oils 19
Table 2. Measurement of induction time of vegetable oils 24
Table 3. Changes in fatty acid composition of vegetable oils at induction time 26
Table 4. Changes in phytosterol composition of vegetable oils at induction time 28
Table 5. Changes in tocopherol composition of vegetable oils at induction time 37
Table 6. Changes in absorbance of 420 ㎚ vegetable oils at induction time 45
Table 7. Changes in DPPH radical scavenging of vegetable oils at induction time 46
Table 8. Changes in AV of vegetable oils at induction time 47
Table 9. Changes in POV of vegetable oils at induction time 48
Table 10. Changes in viscosity of vegetable oils at induction time 49
Table 11. Changes in hunter color values of vegetable oils at induction time 51
Table 12. Changes in TPC of vegetable oils at induction time 52
Table 13. Volatile compounds identified of fresh and induced soybean oils 54
Table 14. Volatile compounds identified of fresh and induced grape-seed oils 55
Table 15. Volatile compounds identified of fresh and induced sunflower oils 56
Table 16. Volatile compounds identified of fresh and induced high-oleic sunflower oils 57
Table 17. Volatile compounds identified of fresh and induced olive oils 58
Table 18. Volatile compounds identified of fresh and induced sesame oils 59
Table 19. Volatile compounds identified of fresh and induced perilla oils 61
Table 20. Volatile compounds identified in fresh and induced soybean oils 63
Table 21. Volatile compounds identified in fresh and induced grape-seed oils 64
Table 22. Volatile compounds identified in fresh and induced sunflower oils 65
Table 23. Volatile compounds identified in fresh and induced high-oleic sunflower oils 66
Table 24. Volatile compounds identified in fresh and induced olive oils 67
Table 25. Volatile compounds identified in fresh and induced sesame oils 68
Table 26. Measurement of volatile patterns of vegetable oils by e-nose 70
Figure 1. Representative chromatogram of TMS ester derivatives of phytosterols... 29
Figure 2. Representative chromatogram of TMS ester derivatives of phytosterols... 29
Figure 3. Representative chromatogram of TMS ester derivatives of phytosterols from... 30
Figure 4. Representative chromatogram of TMS ester derivatives of phytosterols from... 30
Figure 5. Representative chromatogram of TMS ester derivatives of phytosterols from... 31
Figure 6. Representative chromatogram of TMS ester derivatives of phytosterols from... 31
Figure 7. Representative chromatogram of TMS ester derivatives of phytosterols from... 32
Figure 8. Representative chromatogram of TMS ester derivatives of phytosterols from... 32
Figure 9. Representative chromatogram of TMS ester derivatives of phytosterols from... 33
Figure 10. Representative chromatogram of TMS ester derivatives of phytosterols... 33
Figure 11. Representative chromatogram of TMS ester derivatives of phytosterols... 34
Figure 12. Representative chromatogram of TMS ester derivatives of phytosterols... 34
Figure 13. Representative chromatogram of TMS ester derivatives of phytosterols from... 35
Figure 14. Representative chromatogram of TMS ester derivatives of phytosterols... 35
Figure 15. Representative chromatogram of tocopherols from fresh soybean oil 38
Figure 16. Representative chromatogram of tocopherols from induced soybean oil 38
Figure 17. Representative chromatogram of tocopherols from fresh grape-seed oil 39
Figure 18. Representative chromatogram of tocopherols from induced grape-seed oil 39
Figure 19. Representative chromatogram of tocopherols from fresh sunflower oil 40
Figure 20. Representative chromatogram of tocopherols from induced sunflower oil 40
Figure 21. Representative chromatogram of tocopherols from fresh high-oleic sunflower... 41
Figure 22. Representative chromatogram of tocopherols from induced high-oleic... 41
Figure 23. Representative chromatogram of tocopherols from fresh olive oil 42
Figure 24. Representative chromatogram of tocopherols from induced olive oil 42
Figure 25. Representative chromatogram of tocopherols from fresh sesame oil 43
Figure 26. Representative chromatogram of tocopherols from induced sesame oil 43
Figure 27. Representative chromatogram of tocopherols from fresh perilla oil 44
Figure 28. Representative chromatogram of tocopherols from induced perilla oil 44
Figure 29. Measurement of tastes of fresh and induced vegetable oils by E-tongue. 74