Drying Condition and Qualities of Rapeseed and Sunflower

Kanai, Genta; Kato, Hitoshi; Umeda, Naonobu; Okada, Kensuke; Matsuzaki, Morio

doi:10.6090/jarq.44.173

Cited by 5 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The positive aspect is that drying of Japanese quince seeds at 55°C for 5 h did not contribute to an increase of their peroxide content. For instance, as a consequence of changing rapeseed drying temperature from 45 to 65°C the peroxide value in obtained oil increases more than 13 times, resulting in a significant deterioration of oil quality .…”

Section: Resultsmentioning

confidence: 99%

Cold‐pressed Japanese quince (Chaenomeles japonica (Thunb.) Lindl. ex Spach) seed oil as a rich source of α‐tocopherol, carotenoids and phenolics: A comparison of the composition and antioxidant activity with nine other plant oils

Górnaś

Siger

Juhnevica

et al. 2014

Euro J Lipid Sci & Tech

114

View full text Add to dashboard Cite

Research ArticleCold-pressed Japanese quince (Chaenomeles japonica (Thunb.) Lindl. ex Spach) seed oil as a rich source of a-tocopherol, carotenoids and phenolics: A comparison of the composition and antioxidant activity with nine other plant oils New cold-pressed oil recovered from seeds of Japanese quince (Chaenomeles japonica (Thunb.) Lindl. ex Spach, family: Rosaceae), obtained as a by-product of fruit processing, was characterized and compared with nine well-known oils. The Japanese quince seed oil had the highest amounts of tocopherols, b-carotene, and total phenolic compounds (726.20; 10.77 and 64.03 mg/kg, respectively) and the lowest amount of chlorophyll (0.12 mg/kg) and peroxide value (0.59 mEq O 2 /kg) compared to sesame, poppy, peanut, flaxseed, pumpkin, sunflower, almond, hazelnut, and walnut oils. A correlation was found between the total contents of tocochromanols, b-carotene, phenolic compounds, and the radical-scavenging capacity of the oils (0.94, 0.68, 0.63, respectively), and also between the amount of chlorophyll and the CIE a Ã coordinate (0.80) and the amount of b-carotene and the CIE b Ã coordinate (0.47). In Japanese quince seed oil, 13 fatty acids were identified with three predominating: palmitic acid (10.07%), oleic acid (34.55%), and linoleic acid (52.35%). The highest consumer acceptance was noted for hazelnut and walnut oils, while it was lowest for the poppy and flaxseed oils. Amygdalin was not detected in the Japanese quince seed oil.Practical applications: This study demonstrated that Japanese quince seed oil is a richer source of nutritional bio-components than other commercial cold-pressed oils. The positive results of sensory evaluation and the absence of amygdalin in the oil indicates its potential future use in food. Moreover, it is recovered from by-products of fruit industry; therefore, its utilization in obtaining of new, healthy products ensures environmental sustainability and a more effective use of harvested plant material.

show abstract

Section: Resultsmentioning

confidence: 99%

Cold‐pressed Japanese quince (Chaenomeles japonica (Thunb.) Lindl. ex Spach) seed oil as a rich source of α‐tocopherol, carotenoids and phenolics: A comparison of the composition and antioxidant activity with nine other plant oils

Górnaś

Siger

Juhnevica

et al. 2014

Euro J Lipid Sci & Tech

114

View full text Add to dashboard Cite

show abstract

“…Under the given conditions, the chlorophyllase enzyme, a catalyst for the hydrolysis of chlorophyll, is inactivated [15]. Its activity is present mostly during the mild drying of rape seeds [11]. Prior to refining, the extracted oil was subjected to heat treatment at 100 ºC for 24 h. As a result, it was reported that the content of chlorophyll pigments increased 14 %, probably because of their deeper extraction from the chlorophyll-protein complexes [19].…”

Section: Effect Of Extraction Of Rapeseed Oil On Profile and Content Of Chlorophyll Pigmentsmentioning

confidence: 99%

“…It is known that significant differences occur in the content of chlorophyll pigments in the rape seeds depending on the maturity degree of seeds, which is determined by the region of cultivation, harvesting season (winter or spring) and harvesting conditions. The content of chlorophyll pigments depends also on drying and storage conditions [1,11].…”

Section: Effect Of Extraction Of Rapeseed Oil On Profile and Content Of Chlorophyll Pigmentsmentioning

confidence: 99%

Effect of extraction and refining of rapeseed oil on profile and content of chlorophyll pigments

Minkowski¹,

Bartosiak²,

Ciemiński³

2019

zntj

View full text Add to dashboard Cite

The objective of the research study was to determine the effect of industrial extraction and refining of rapeseed oil on the profile and content of chlorophyll pigments, where those processes were carried out under industrial conditions with the use of a modernized production line. The material to be analysed were samples of oil collected at various stages of the rapeseed oil extraction and refining processes. The content of chlorophyll pigments was determined using a reversed phase high-performance liquid chromatography with fluorometric detection. It was found that the industrial method of extracting rapeseed oil affected the profile and content of chlorophyll pigments. The content of chlorophyll pigments in the extracted oil was 40 % higher than that in the pressed oil. The chlorophyll pigments analysed mainly contained pheophytin and phyropheophytin, and only small amounts of chlorophylls a and b. The thermal treatment of oil performed prior to the refining caused the chlorophylls to fully transform. The phyropheophytin to pheophytin ratio changed from 0.7 to 3.8 : 1. The crude oil contained chlorophylls derivatives only. The acid-degumming and neutralisation processes of oil caused the total content of chlorophyll pigments to slightly decrease and their profile to change a little. The effectiveness of reducing chlorophyll pigments after bleaching was 98.5 %. Compared to the chlorophyll b derivatives, the chlorophyll a derivatives were more easily removed from the oil with the use of bleaching clay. In some batches of the bleached oil the phyropheophytin b was still present and its amount was of 0.09 mg/kg.

show abstract

Estimation of the storage properties of rapeseeds using an artificial neural network

Voća

Pezo

Jukić

et al. 2022

Industrial Crops and Products

View full text Add to dashboard Cite

Drying Condition and Qualities of Rapeseed and Sunflower

Cited by 5 publications

References 8 publications

Cold‐pressed Japanese quince (Chaenomeles japonica (Thunb.) Lindl. ex Spach) seed oil as a rich source of α‐tocopherol, carotenoids and phenolics: A comparison of the composition and antioxidant activity with nine other plant oils

Cold‐pressed Japanese quince (Chaenomeles japonica (Thunb.) Lindl. ex Spach) seed oil as a rich source of α‐tocopherol, carotenoids and phenolics: A comparison of the composition and antioxidant activity with nine other plant oils

Effect of extraction and refining of rapeseed oil on profile and content of chlorophyll pigments

Estimation of the storage properties of rapeseeds using an artificial neural network

Contact Info

Product

Resources

About