The impact of sowing date and irrigation regime on castor (Ricinus communis L.) seed yield, oil quality characteristics and fatty acid composition during post rainy season in South India

2013 ◽  
Vol 44 ◽  
pp. 25-31 ◽  
Author(s):  
A.V. Ramanjaneyulu ◽  
A. Vishnuvardhan Reddy ◽  
A. Madhavi
Phyton ◽  
2015 ◽  
Vol 84 (1) ◽  
pp. 26-33
Author(s):  
Huang FL ◽  
GL Zhu ◽  
YS Chen ◽  
FJ Meng ◽  
M Peng ◽  
...  

1963 ◽  
Vol 41 (1) ◽  
pp. 1879-1885 ◽  
Author(s):  
David T. Canvin

Castor seeds were collected at 3- and 6-day intervals after blossoming until maturity. The seeds were analyzed for protein and oil content and the fatty acid composition of the oil was determined by gas–liquid chromatography. Oil formation began 21 days after blossoming and two-thirds of the oil was synthesized in the next 20 days; the remaining one-third was formed in the last 20-day period. Protein synthesis occurred over a longer period of time but was accelerated during the middle 20-day period.Ricinoleic acid, the characteristic component of castor oil, was not present in the very young seed, but appeared when the seed was 12 days old and represented 90% of the fatty acids when the seed was 36 days old. After this time the fatty acid composition of the oil remained constant and characteristic. In the intervening 24-day period, the amount of ricinoleic acid was lower than normal. The amount of each fatty acid component, expressed on a per seed basis, increased over the entire period of development and there was no evidence of substantial conversion of oleic or linoleic acid to ricinoleic acid.


1963 ◽  
Vol 41 (9) ◽  
pp. 1879-1885 ◽  
Author(s):  
David T. Canvin

Castor seeds were collected at 3- and 6-day intervals after blossoming until maturity. The seeds were analyzed for protein and oil content and the fatty acid composition of the oil was determined by gas–liquid chromatography. Oil formation began 21 days after blossoming and two-thirds of the oil was synthesized in the next 20 days; the remaining one-third was formed in the last 20-day period. Protein synthesis occurred over a longer period of time but was accelerated during the middle 20-day period.Ricinoleic acid, the characteristic component of castor oil, was not present in the very young seed, but appeared when the seed was 12 days old and represented 90% of the fatty acids when the seed was 36 days old. After this time the fatty acid composition of the oil remained constant and characteristic. In the intervening 24-day period, the amount of ricinoleic acid was lower than normal. The amount of each fatty acid component, expressed on a per seed basis, increased over the entire period of development and there was no evidence of substantial conversion of oleic or linoleic acid to ricinoleic acid.


2016 ◽  
Vol 105 (1) ◽  
pp. 177-184 ◽  
Author(s):  
Kelly A Dingess ◽  
Christina J Valentine ◽  
Nicholas J Ollberding ◽  
Barbara S Davidson ◽  
Jessica G Woo ◽  
...  

2021 ◽  
Vol 72 (3) ◽  
pp. e415 ◽  
Author(s):  
M. De Wit ◽  
V.K. Motsamai ◽  
A. Hugo

Cold-pressed seed oil from twelve commercially produced cactus pear cultivars was assessed for oil yield, fatty acid composition, physicochemical properties, quality and stability. Large differences in oil content, fatty acid composition and physicochemical properties (IV, PV, RI, tocopherols, ORAC, % FFA, OSI and induction time) were observed. Oil content ranged between 2.51% and 5.96% (Meyers and American Giant). The important fatty acids detected were C16:0, C18:0, C18:1c9 and C18:2c9,12, with C18:2c9,12, the dominating fatty acid, ranging from 58.56-65.73%, followed by C18:1c9, ranging between 13.18-16.07%, C16:0, which ranged between 10.97 - 15.07% and C18:0, which ranged between 2.62-3.18%. Other fatty acids such as C14:0, C16:1c9, C17:0, C17:1c10, C20:0, C18:3c9,12,15 and C20:3c8,11,14 were detected in small amounts. The quality parameters of the oils were strongly influenced by oil content, fatty acid composition and physicochemical properties. Oil content, PV, % FFA, RI, IV, tocopherols, ORAC and ρ-anisidine value were negatively correlated with OSI. C18:0; C18:1c9; C18:2c9,12; MUFA; PUFA; n-6 and PUFA/SFA were also negatively correlated with OSI. Among all the cultivars, American Giant was identified as the paramount cultivar with good quality traits (oil content and oxidative stability).


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