Results 11 to 20 of about 2,018,257 (280)

Decreasing acid value of fatty acid ethyl ester products using complex enzymes [PDF]

open access: yesFrontiers in Bioengineering and Biotechnology
Recently, enzymatic method has been used to prepare biodiesel using various oils. But the high acid value of the biodiesel product using enzyme as a catalyst has been one issue. In this work, an attempt to reduce the acid value of fatty acid ethyl ester (
Yuting Li, Jingjing Guo, Shangde Sun
doaj   +2 more sources

Quantitative Prediction of Acid Value of Camellia Seed Oil Based on Hyperspectral Imaging Technology Fusing Spectral and Image Features [PDF]

open access: yesFoods
Acid value (AV) serves as an important indicator to assess the quality of oil, which can be used to judge the deterioration of edible oil. In order to realize the quantitative prediction of the AV of camellia seed oil, which was made from camellia ...
Yuqi Gu   +6 more
doaj   +2 more sources

Evaluation of Potentiometric Methods for Acid Number Determination in Commercial Biodiesel Samples and Proposal of Alternative Method

open access: yesOrbital: The Electronic Journal of Chemistry, 2018
The acid number (AN) is an important parameter that informs the quantity of free fatty acids (FFA) and acids originating from degradation reactions of biodiesel during production process and its storage.
Ellen Paula da Silva Santos   +4 more
doaj   +3 more sources

Assessment of Agroeconomic Indicators of Sesamum indicum L. as Influenced by Application of Boron at Different Levels and Plant Growth Stages

open access: yesMolecules, 2021
To achieve the nutritional target of human food, boron (B) has been described as an essential mineral in determining seed and theoretical oil yield of Sesamum indicum L.
Salwinder Singh Dhaliwal   +10 more
doaj   +1 more source

Hippuric acid in urine: reference values [PDF]

open access: yesRevista de Saúde Pública, 2002
OBJECTIVE: To establish reference values for hippuric acid (HA) excreted in the urine, and to evaluate the impact of age, gender, alcohol, and tobacco, on these levels in a population nonexposed to toluene. METHODS: Reference values for hippuric acid in urine were determined in 115 toluene nonexposed healthy volunteers, from Alfenas city, Southeastern ...
Siqueira, Maria Elisa PB   +1 more
openaire   +8 more sources

Shelf-life Prediction of Black Sesame Compound Honey Pill and the Effect of Packaging Method on its Storage Quality

open access: yesLiang you shipin ke-ji, 2022
Taking the black sesame compound honey pill as the research object, the acid value and peroxide value are used as evaluation indicators to investigate the influence of different storage temperatures on its quality; on this basis, the shelf life of the ...
YOU Jing   +4 more
doaj   +1 more source

Effect of Curcumin Natural Antioxidant on Oxidative Stability of Commercial Biodiesels from Different Raw Materials

open access: yesOrbital: The Electronic Journal of Chemistry, 2019
Biodiesel emerges as an alternative biofuel for fossil ones because it is less polluting and can be produced from renewable sources. However, biofuels are generally more susceptible to auto-oxidation than fossil ones. Some fundamental characteristics in
Mikaelly Nayara Santos   +5 more
doaj   +3 more sources

THE VALUE OF SULPHATES IN CARBOLIC-ACID POISONING. [PDF]

open access: yesJAMA: The Journal of the American Medical Association, 1907
HISTORICAL DATA. The treatment of phenol poisoning by sulphates dates from the observation of Baumann,1in 1876, that a considerable proportion of the phenol is excreted in the urine as the practically harmless phenol-sulphonic (sulphocarbolic) acid, C6H4(OH)SO3H, or, rather, as the salts of this acid with the urine bases.
Torald Sollmann, E. D. Brown
openaire   +3 more sources

Instrumental Evaluation of Selected Properties of Oil Extracted from Walnuts before and after the Roasting Process

open access: yesBiology and Life Sciences Forum, 2023
Walnuts (Juglans regia) are characterized by a high fat content of approximately 73%. The oil contained in the nuts is rich in unsaturated fatty acids, including monounsaturated oleic acid and polyunsaturated fatty acids, both of the n-3 and n-6 family ...
Joanna Bryś   +3 more
doaj   +1 more source

Evolution of oxidation in soybean oil and its biodiesel under the conditions of the oxidation stability test

open access: yesGrasas y Aceites, 2013
The objective of this study was to know the evolution of the oxidation of soybean oil and biodiesel under the conditions of the oxidation stability test (110 °C) using the Rancimat apparatus.
G. G. Pereira   +3 more
doaj   +1 more source

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