Effect of the chemical refining process on perilla seed oil composition and oxidative stability
| Autor: | Xiaoqing Wang, Wenjun Dang, Fengguang Pan, Xiaoxuan Ma, Yufei Xu, Chujie Liu, Jie Zhao, Baoli Wen |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Acid value Saponification value Chemistry General Chemical Engineering 04 agricultural and veterinary sciences General Chemistry Oxidative phosphorylation 040401 food science 01 natural sciences 0404 agricultural biotechnology 010608 biotechnology Scientific method Composition (visual arts) Tocopherol Food science Peroxide value Food Science Refining (metallurgy) |
| Zdroj: | Journal of Food Processing and Preservation. 43 |
| ISSN: | 1745-4549 0145-8892 |
| Popis: | The effect of chemical refining process on the physicochemical characteristics and oxidative stability of perilla seed oil was investigated. We analyzed five samples corresponding to each step of the refining process (degumming, neutralization, bleaching, deodorization, and refined oil). The results indicated that the acid value (2.20–0.24 mg KOH/g) and peroxide value (4.32–1.26 mEq/kg) decreased significantly, while the saponification value (178.81–196.24 mg KOH/g) and p‐anisidine value (3.45–9.55) increased dramatically. There was no significant difference in conjugated diene, except in the degummed oil. Additionally, the refractive index did not change throughout the process. Eleven fatty acids were identified in samples, and there was no significant difference observed among them. The refining process resulted in decreases in total tocopherol content (25.0%) and total phenolic content (51.7%). Degummed, neutralized, bleached, and deodorized oils have high primary oxidation stability, whereas refined oils exhibit low secondary oxidation rates. PRACTICAL APPLICATIONS: The present study was designed to examine the physicochemical properties of perilla seed oil at various phases of refining, as well as its bioactive compounds and oxidative stability during the process. This study provides a good reference for the industrial parameters of the refining process to obtain high‐quality products for consumers. |
| Databáze: | OpenAIRE |
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