The effect of solvent extraction upon the utilisation of rapeseed meal protein by rats

1983 ◽  
Vol 34 (9) ◽  
pp. 917-920 ◽  
Author(s):  
Michael D. Eyre ◽  
John A. Rooke
1995 ◽  
Vol 43 (12) ◽  
pp. 3065-3069 ◽  
Author(s):  
Teresa Hernandez ◽  
Carmen Centeno ◽  
Carmen Martinez ◽  
Amelia Hernandez

2014 ◽  
Vol 67 (2) ◽  
Author(s):  
Norzita Ngadi ◽  
Noor Yahida Yahya

Pandan (Pandanus amaryllifolius Roxb.) leaves are widely used in Malaysia as a source of natural flavoring.  The major compound contributing to the characteristic flavour of Pandan is 2-acetyl-1-pyrroline (2AP). As the consumer requirement for use of natural flavours, extraction of components from natural sources has been sought. In this study, solvent extraction of 2AP from Pandan leaves was performed. The effect of solvent used during extraction process (i.e. methanol, ethanol, propanol) towards the yield of 2AP was investigated. The presence of 2AP was determined using GCMS. The results obtained showed that ethanol was the best solvent to extract 2AP from Pandan leaves compared to methanol as higher 2AP peak arises from ethanol chromatogram.  However there is no 2AP detected when propanol was used as solvent.  It is believed that polarity of the solvent plays an important role in the extraction of 2AP.


2010 ◽  
Vol 54 (2) ◽  
pp. 145-152 ◽  
Author(s):  
Inês J. Seabra ◽  
Mara Elga M. Braga ◽  
Maria Teresa Batista ◽  
Hermínio C. de Sousa

2018 ◽  
Vol 46 (7) ◽  
pp. 778-786 ◽  
Author(s):  
Ru-nan HU ◽  
Zhi-cai WANG ◽  
Lei LI ◽  
Xiao-ling WANG ◽  
Chun-xiu PAN ◽  
...  

2019 ◽  
Vol 56 (6) ◽  
pp. 3090-3098
Author(s):  
Hristo Kalaydzhiev ◽  
Vanya D. Gandova ◽  
Petya Ivanova ◽  
Teresa R. S. Brandão ◽  
Tzvetelin T. Dessev ◽  
...  

Foods ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 703
Author(s):  
Hristo Kalaydzhiev ◽  
Radoslav Georgiev ◽  
Petya Ivanova ◽  
Magdalena Stoyanova ◽  
Cristina L. M. Silva ◽  
...  

The solubility of plant protein isolates is a key determinant of their potential application. Two protein isolates (PI) from ethanol-treated industrial rapeseed meal, PI10.5–2.5 and PI2.5–8.5, were prepared by sequential isoelectric precipitation of alkali-extracted proteins (pH 12) starting from pH 10.5 to 2.5 or from pH 2.5 to 8.5, respectively. Biochemical analyses revealed that PI2.5–8.5 contained a higher amount of crude protein (72.84%) than PI10.5–2.5 (68.67%). In the same protein isolate, the level of total phenols (0.71%) was almost two-fold higher than that in PI10.5–2.5 (0.42%). No glucosinolates were established in both protein isolates. SDS-PAGE analysis demonstrated that PI10.5–2.5 contained 10 to 15 kDa protein fractions in a relatively higher amount, while PI2.5–8.5 was enriched in 18 to 29 kDa protein fractions. PI10.5–2.5 exhibited high solubility, varying from 41.74% at pH 4.5 to 65.13% at pH 6.5, while PI2.5–8.5 was almost two-fold less soluble under the same conditions. Up to pH 5.5, the addition of NaCl at 0.03 and 0.25 M diminished the solubility of PI2.5–8.5, while the solubility of PI10.5–2.5 was increased. The supplementation of PI10.5–2.5 with 0.25 M NaCl enhanced the protein solubility to 56.11% at pH 4.5 and 94.26% at pH 6.5. The addition of 0.03 M NaCl also increased the solubility of this protein isolate but to a lower extent. Overall, the approach for sequential precipitation of proteins influenced the biochemical characteristics, protein fractional profile and solubility of prepared protein isolates.


1989 ◽  
Vol 80 (2) ◽  
pp. 261-267 ◽  
Author(s):  
M. P. Mansour ◽  
H. J. Cornell ◽  
L. A. Holt ◽  
D. E. Rivett

1937 ◽  
Vol 29 (3) ◽  
pp. 319-325 ◽  
Author(s):  
G. H. Von Fuchs ◽  
A. P. Anderson

Fuel ◽  
2019 ◽  
Vol 247 ◽  
pp. 97-107 ◽  
Author(s):  
Ran Yu ◽  
Dong Liu ◽  
Bin Lou ◽  
Wei Zhu ◽  
Shuhai Guo ◽  
...  

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