scholarly journals Effect of Petroleum Ether Extraction and Readdition of Various Compounds on the Photochemical Activity of Isolated Chloroplasts.

1958 ◽  
Vol 33 (5) ◽  
pp. 367-372 ◽  
Author(s):  
Max Milner ◽  
C. Stacy French ◽  
H. W. Milner
Keyword(s):  
Petroleum Ether ◽  
Photochemical Activity ◽  
Petroleum Ether Extraction ◽  
Ether Extraction ◽  
Isolated Chloroplasts

scholarly journals Production of bio-diesel from Pithraj (Aphanamixis polystachya) seed oil

2015 ◽  
Vol 50 (2) ◽  
pp. 135-142 ◽  
Author(s):  
SK Banik ◽  
MA Rouf ◽  
M Khanam ◽  
MS Islam ◽  
T Rabeya ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Petroleum Ether ◽  
Extraction Method ◽  
Seed Oil ◽  
Maximum Yield ◽  
Acid Value ◽  
Optimum Conditions ◽  
Petroleum Ether Extraction ◽  
Ether Extraction ◽  
Soxhlet Apparatus

The Pithraj seed has been collected from Gazipur district, Bangladesh. The oil from the seed was extracted by using Soxhlet apparatus using petroleum ether extraction method. Maximum yield of oil was found to be 50 % when the process was carried out for 2.5 hours. The physicochemical properties of the extracted oil were studied. The properties of the oil reveal that the oil corresponds to diesel except acid value and sulphur content. The optimum conditions of the transesterification of the oil was 40% ethanol and 0.45% KOH at 75 0C for 1.5 hours. The optimum yield was more than 95 %.Bangladesh J. Sci. Ind. Res. 50(2), 135-142, 2015

Collaborative Study of the Determination of Fat in Intermediate Moisture Pet Foods

1976 ◽  
Vol 59 (6) ◽  
pp. 1218-1223
Author(s):  
Gustav O Kuhn
Keyword(s):  
Petroleum Ether ◽  
Acid Hydrolysis ◽  
Cross Section ◽  
Collaborative Study ◽  
Pet Food ◽  
Petroleum Ether Extraction ◽  
Hydrolysis Method ◽  
Ether Extraction ◽  
Aoac Method

Abstract Four different semimoist pet food formulations representing a cross section of commercial products were studied collaboratively for fat content by 2 methods. Ten laboratories participated in the study. Direct petroleum ether extraction by AOAC method 7.045 yielded low and variable fat recovery. AOAC acid hydrolysis method 7.047 for fat in baked dog foods was satisfactory for semimoist pet foods. The method, with some editorial changes, was adopted as official first action for this type of pet food.

scholarly journals The petroleum ether extraction of Brassica Rapa L. induces apoptosis of Lung adenocarcinoma cells via mitochondria-dependent pathway

2021 ◽  
Author(s):  
Xierenguli Halike ◽  
Jin-Yu Li ◽  
Pengfei Yuan ◽  
Kaimeiliya Yasheng ◽  
Min Chen ◽  
...  
Keyword(s):  
Petroleum Ether ◽  
Brassica Rapa ◽  
Biological Activities ◽  
Petroleum Ether Extract ◽  
Traditional Food ◽  
Ether Extract ◽  
Ether Extraction ◽  
Adenocarcinoma Cells ◽  
Lung Adenocarcinoma Cells ◽  
Dependent Pathway

Brassica rapa L. is one of the most popular traditional food with a variety of biological activities. In this study, the petroleum ether extract of B. rapa was separated by...

scholarly journals Termite-Repellent Activity and Chemical Composition of West Indian Mahogany Wood, (Swietenia Mahagoni Jacq.) with Special Reference to the P2 Fraction

1969 ◽  
Vol 42 (3) ◽  
pp. 185-195
Author(s):  
Conrado F. Asenjo ◽  
Luis Amorós Marín ◽  
Wanda Torres ◽  
Alice Del Campillo
Keyword(s):  
Petroleum Ether ◽  
Petroleum Ether Extract ◽  
West Indian ◽  
Repellent Activity ◽  
Structural Level ◽  
Ether Extract ◽  
Selective Solvents ◽  
Ether Extraction ◽  
Termite Attack ◽  
Waxy Substance

1. Serial extraction of West Indian mahogany wood with selective solvents was performed. 2. The petroleum ether extract was the only fraction to exhibit promising termite-repellent activity. 3. Mahogany blocks subjected to petroleum ether extraction became susceptible to termite attack. 4. A waxy substance (P2 fraction) separated from the petroleum ether extract at times showed high termite-repellent activity. The termite-repellent principle in the P2 fraction seems to be a labile one, as the termite-repellent activity varied greatly from batch to batch. 5. The P2 fraction is a mixture of two major components and of at least a third minor one. As far as we have been able to determine this mixture, at the elemental level, contains carbon, hydrogen, and oxygen only, while esters have been the only compounds definitely characterized at the structural level.

COALESCENCE AS A FACTOR IN SOLVENT STIMULATION OF PLASTID PHOSPHATIDASE C ACTIVITY

1957 ◽  
Vol 35 (2) ◽  
pp. 119-126 ◽  
Author(s):  
Morris Kates ◽  
Paul R. Gorham
Keyword(s):  
Enzymatic Activity ◽  
Petroleum Ether ◽  
Ethyl Ether ◽  
Enzymatic Reaction ◽  
Ethyl Butyrate ◽  
Insoluble Complex ◽  
Ether Extraction ◽  
Propyl Ketone ◽  
Stimulation Of

Solvents which stimulate plastid phosphatidase C activity (e.g., ethyl ether, propyl ketone, and ethyl butyrate) have been observed (microscopically) to produce coalescence of lecithin and chloroplast phases, while those which do not stimulate the reaction (e.g., chloroform and petroleum ether) do not produce coalescence. In the ethyl ether-stimulated reaction, all of the original enzymatic activity was associated with the coalesced material, and the lecithin apparently formed an ether-insoluble complex with the chloroplasts; no enzymatic activity appeared in either the aqueous or ether phases. Ether extraction of chloroplasts alone did not liberate the enzyme from the plastids, and the presence of this stimulating solvent was still necessary for reaction with the substrate to occur. It is concluded that stimulating solvents achieve their effect primarily by causing substrate and plastid phases to coalesce and that the enzymatic reaction actually proceeds in the coalesced phase.

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