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Effect of Dehulling Treatment on the Oxidative Stability of Cold‐Pressed Low Erucic Acid Rapeseed Oil

This study compared the oxidative stability of cold‐pressed rapeseed oil (CPRO) and dehulled cold‐pressed rapeseed oil (DCPRO) in the dark at 60 °C and monitored the evolution of minor constituents (tocopherols, phytosterols, phenolics). The results showed that dehulling significantly influenced the... Full description

Journal Title: Journal of the American Oil Chemists' Society October 2011, Vol.88(10), pp.1633-1639
Main Author: Yang, Mei
Other Authors: Liu, Changsheng , Huang, Fenghong , Zheng, Chang , Zhou, Qi
Format: Electronic Article Electronic Article
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ID: ISSN: 0003-021X ; E-ISSN: 1558-9331 ; DOI: 10.1007/s11746-011-1822-z
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recordid: wj10.1007/s11746-011-1822-z
title: Effect of Dehulling Treatment on the Oxidative Stability of Cold‐Pressed Low Erucic Acid Rapeseed Oil
format: Article
creator:
  • Yang, Mei
  • Liu, Changsheng
  • Huang, Fenghong
  • Zheng, Chang
  • Zhou, Qi
subjects:
  • Oxidative Stability
  • Food And Feed Science
  • Nutrition And Health
ispartof: Journal of the American Oil Chemists' Society, October 2011, Vol.88(10), pp.1633-1639
description: This study compared the oxidative stability of cold‐pressed rapeseed oil (CPRO) and dehulled cold‐pressed rapeseed oil (DCPRO) in the dark at 60 °C and monitored the evolution of minor constituents (tocopherols, phytosterols, phenolics). The results showed that dehulling significantly influenced the oxidative stability of the oils, the DCPRO was more easily oxidized. During the autoxidation, the peroxide value (PV) and anisidine value (p‐AV) of the DCPRO ranged from 2.38 to 95.97 mequiv O kg and from 1.20 to 30.75, whereas those of the CPRO ranged from 3.80 to 46.17 mequiv O kgand from 2.69 to 14.87, respectively. Dehulling affected the contents and the rates of decrease of tocopherols and phytosterols of the cold‐pressed oils, and the rates of decrease of tocopherols and phytosterols of the CPRO were lower than those of the DCPRO (10% less, on average). The rancimat induction periods (IPs) were positively correlated with the concentrations of the total tocopherols (For DCPRO, = 0.9622, For CPRO, = 0.8334). The total phenolics contents as determined by spectrophotometry first increased and then decreased. Tocopherols and phytosterols had a greater effect on oxidative stability of the rapeseed oils during the first 30 days, and phenolics had a greater effect in the 30–40 day period.
language:
source:
identifier: ISSN: 0003-021X ; E-ISSN: 1558-9331 ; DOI: 10.1007/s11746-011-1822-z
fulltext: fulltext
issn:
  • 0003-021X
  • 0003021X
  • 1558-9331
  • 15589331
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titleEffect of Dehulling Treatment on the Oxidative Stability of Cold‐Pressed Low Erucic Acid Rapeseed Oil
creatorYang, Mei ; Liu, Changsheng ; Huang, Fenghong ; Zheng, Chang ; Zhou, Qi
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subjectOxidative Stability ; Food And Feed Science ; Nutrition And Health
descriptionThis study compared the oxidative stability of cold‐pressed rapeseed oil (CPRO) and dehulled cold‐pressed rapeseed oil (DCPRO) in the dark at 60 °C and monitored the evolution of minor constituents (tocopherols, phytosterols, phenolics). The results showed that dehulling significantly influenced the oxidative stability of the oils, the DCPRO was more easily oxidized. During the autoxidation, the peroxide value (PV) and anisidine value (p‐AV) of the DCPRO ranged from 2.38 to 95.97 mequiv O kg and from 1.20 to 30.75, whereas those of the CPRO ranged from 3.80 to 46.17 mequiv O kgand from 2.69 to 14.87, respectively. Dehulling affected the contents and the rates of decrease of tocopherols and phytosterols of the cold‐pressed oils, and the rates of decrease of tocopherols and phytosterols of the CPRO were lower than those of the DCPRO (10% less, on average). The rancimat induction periods (IPs) were positively correlated with the concentrations of the total tocopherols (For DCPRO, = 0.9622, For CPRO, = 0.8334). The total phenolics contents as determined by spectrophotometry first increased and then decreased. Tocopherols and phytosterols had a greater effect on oxidative stability of the rapeseed oils during the first 30 days, and phenolics had a greater effect in the 30–40 day period.
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descriptionThis study compared the oxidative stability of cold‐pressed rapeseed oil (CPRO) and dehulled cold‐pressed rapeseed oil (DCPRO) in the dark at 60 °C and monitored the evolution of minor constituents (tocopherols, phytosterols, phenolics). The results showed that dehulling significantly influenced the oxidative stability of the oils, the DCPRO was more easily oxidized. During the autoxidation, the peroxide value (PV) and anisidine value (p‐AV) of the DCPRO ranged from 2.38 to 95.97 mequiv O kg and from 1.20 to 30.75, whereas those of the CPRO ranged from 3.80 to 46.17 mequiv O kgand from 2.69 to 14.87, respectively. Dehulling affected the contents and the rates of decrease of tocopherols and phytosterols of the cold‐pressed oils, and the rates of decrease of tocopherols and phytosterols of the CPRO were lower than those of the DCPRO (10% less, on average). The rancimat induction periods (IPs) were positively correlated with the concentrations of the total tocopherols (For DCPRO, = 0.9622, For CPRO, = 0.8334). The total phenolics contents as determined by spectrophotometry first increased and then decreased. Tocopherols and phytosterols had a greater effect on oxidative stability of the rapeseed oils during the first 30 days, and phenolics had a greater effect in the 30–40 day period.
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abstractThis study compared the oxidative stability of cold‐pressed rapeseed oil (CPRO) and dehulled cold‐pressed rapeseed oil (DCPRO) in the dark at 60 °C and monitored the evolution of minor constituents (tocopherols, phytosterols, phenolics). The results showed that dehulling significantly influenced the oxidative stability of the oils, the DCPRO was more easily oxidized. During the autoxidation, the peroxide value (PV) and anisidine value (p‐AV) of the DCPRO ranged from 2.38 to 95.97 mequiv O kg and from 1.20 to 30.75, whereas those of the CPRO ranged from 3.80 to 46.17 mequiv O kgand from 2.69 to 14.87, respectively. Dehulling affected the contents and the rates of decrease of tocopherols and phytosterols of the cold‐pressed oils, and the rates of decrease of tocopherols and phytosterols of the CPRO were lower than those of the DCPRO (10% less, on average). The rancimat induction periods (IPs) were positively correlated with the concentrations of the total tocopherols (For DCPRO, = 0.9622, For CPRO, = 0.8334). The total phenolics contents as determined by spectrophotometry first increased and then decreased. Tocopherols and phytosterols had a greater effect on oxidative stability of the rapeseed oils during the first 30 days, and phenolics had a greater effect in the 30–40 day period.
copBerlin/Heidelberg
pubSpringe-Verlag
doi10.1007/s11746-011-1822-z
pages1633-1639
date2011-10