Results 121 to 130 of about 139,266 (240)
Tạp chí Khoa học và Công nghệWaste cooking oil (WCO) is an abundant, low-cost feedstock for biodiesel, but its high free fatty acid (FFA) content challenges conventional base-catalyzed transesterification, often causing soap formation and low yield.
Dang Nguyen Thoai, Nguyen Thi Thuy Hong
doaj +1 more source
Exploiting of Wasted Cooking Oil at Making Biodiesel Through Transesterification Process with Applies K2CO3 Catalyst as Fuel Diesel of Renewable [PDF]
, 2011 This research aim is to know the influence from various USAge of K2CO3 catalyst and methanol solvent to biodiesel from wasted cooking oil. The making of biodiesel from waste cooking oil as raw material this before all was done by using esterification ...
ST.,M.T., Zulkarnain
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Journal of Applied Polymer Science, EarlyView.This study demonstrates the thermal expansion behavior of curdlan tripropionate films using thermal mechanical analysis and synchrotron WAXD. Both amorphous and crystalline films show characteristic expansion near the glass transition, providing structural insights for designing heat‐resistant polysaccharide‐based plastics.
Taizo Kabe, Tadahisa Iwata
wiley +1 more source
ChemistryOpenHerein, a nucleophilic substitution reaction between arylformic acids and α‐bromo esters, facilitated by a Cs2CO3‐DMA system, is reported. This reaction occurs under mild conditions, yielding a diverse range of valuable lactic acid derivatives (34 ...
Xinyan Song +10 more
doaj +1 more source
Animal Research and One Health, EarlyView.The transition period in dairy cows, spanning 3 weeks before and after calving, is a critical phase characterized by increased nutrient demands, reduced dry matter intake (DMI), and elevated risk of metabolic disorders such as negative nutrient balance (NNB), lipolysis, proteolysis, and oxidative stress.
Mohammed S. Seleem +5 more
wiley +1 more source
Studies on the extraction and characterization of pectin and bitter principles from New Zealand grapefruit and Philippine calamansi : a thesis presented in partial fulfilment of the requirements for the degree of Master of Technology in Food Technology at Massey University [PDF]
, 1981 A study was conducted to determine the presence of bitter components in NZ grapefruit and Philippine calamansi; describe the effect of maturity on the bitter components and other chemical constituents of grapefruit; reduce the bitterness of grapefruit ...
Nisperos, Myrna Ordoña
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Animal Research and One Health, EarlyView.Unregulated inflammation increases non‐esterified fatty acids (NEFAs), and triggers multi‐pathway hepatocyte damage including oxidative stress, mitochondrial dysfunction, and metabolic disorders in dairy cows. ABSTRACT Circulating concentrations of nonesterified fatty acids (NEFAs) are elevated due to lipid mobilization from adipose tissue in ...
Siqing Mao +12 more
wiley +1 more source
Synthesis of trimethylolpropane trioleate by using stannous oxalate catalyst
Biofuels, Bioproducts and Biorefining, EarlyView.Abstract This study was conducted to synthesize trimethylolpropane trioleate (TMPTO) using a stannous oxalate catalyst and investigate the dependence of the esterification rate on reaction variables. The highest esterification rate of approximately 99% was achieved at a 2.75:1 oleic acid/trimethylolpropane, 1.5% catalyst amount, 180°C reaction ...
Oguzhan Ilgen, Sumeyye Bilgic
wiley +1 more source
Synthesis of pyromellitic acid esters [PDF]
The ester acids necessary for studyng the thermochemical properties of pyromellitic acid (PMK)-based peroxides were investigated. Obtaining a tetramethyl ester of a PMK was described.
Donchak, V. A. +2 more
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Effects of detergents on activity, thermostability and aggregation of immobilized lipases [PDF]
, 2014 Predmetom tejto diplomovej práce bolo štúdium vplyvu detergentov na aktivitu, termostabilitu a agregáciu voľnej a imobilizovanej formy komerčného preparátu lipázy izolovanej z mikroskopickej huby Rhizopus arrhizus. Teoretická časť obsahuje ucelenú rešerš
Bančáková, Anna
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