Results 21 to 30 of about 280,881 (355)

Biotechnological production of citric acid [PDF]

open access: yesBrazilian Journal of Microbiology, 2010
This work provides a review about the biotechnological production of citric acid starting from the physicochemical properties and industrial applications, mainly in the food and pharmaceutical sectors. Several factors affecting citric acid fermentation are discussed, including carbon source, nitrogen and phosphate limitations, pH of culture medium ...
B. Max   +5 more
openaire   +5 more sources

Effect of pre-harvest foliar application of citric acid and malic acid on chlorophyll content and post-harvest vase life of Lilium cv. Brunello

open access: yesFrontiers in Plant Science, 2012
Preharvest use of citric acid is a novel method in vase life extension of cut flowers, which is reported on tuberose earlier and confirmed here on lilium.
Nafiseh eDarandeh, Ebrahim eHadavi
doaj   +1 more source

A test for citric acid [PDF]

open access: yesThe Analyst, 1878
n ...
Sabanin, A., Laskowsky, N.
openaire   +2 more sources

Microbial production of citric acid [PDF]

open access: yesBrazilian Archives of Biology and Technology, 1999
Citric acid is the most important organic acid produced in tonnage and is extensively used in food and pharmaceutical industries. It is produced mainly by submerged fermentation using Aspergillus niger or Candida sp. from different sources of carbohydrates, such as molasses and starch based media. However, other fermentation techniques, e.g.
Carlos Ricardo Soccol   +5 more
openaire   +5 more sources

Citric acid promoted melanin synthesis in B16F10 mouse melanoma cells, but inhibited it in human epidermal melanocytes and HMV-II melanoma cells via the GSK3β/β-catenin signaling pathway.

open access: yesPLoS ONE, 2020
Melanin, a pigment synthesized by melanocytes in the skin, resists the damage caused by ultraviolet rays to cells. Citric acid, a well-known food additive, is commonly used as an antioxidant and is an important part of the tricarboxylic acid (TCA) cycle ...
Siqi Zhou, Kazuichi Sakamoto
doaj   +1 more source

Catalytic CVD Synthesis of Double and Triple-walled Carbon Nanotubes by the Control of the Catalyst Preparation [PDF]

open access: yes, 2005
We report the influence of catalyst preparation conditions for the synthesis of carbon nanotubes (CNTs) by catalytic chemical vapour deposition (CCVD). Catalysts were prepared by the combustion route using either urea or citric acid as the fuel. We found
Flahaut, Emmanuel   +2 more
core   +1 more source

Citric Acid Production: Raw Material, Microbial Production, Fermentation Strategy and Global Market: Critical Review

open access: yesAl-Khawarizmi Engineering Journal, 2023
Citric acid is an essential ingredient for the manufacture of (12) key industrial chemicals. Citric acid use is increasing steadily with a high annual growth rate as a result of the development of ever more sophisticated applications.
Ramzi A. Abd Alsaheb   +3 more
doaj   +1 more source

Investigating matrix interference in the pharmacopeial limit test for aluminum in citric acid: a re-examination, for revision of the method [PDF]

open access: yesPharmacia, 2022
In many pharmacopoeias, the limit test used for determining the level of aluminum in citric acid labeled for use in the manufacture of dialysate, is based on solvent extraction using 8-hydroxyquinoline and measurement of fluorescence.
Theerasak Rojanarata   +6 more
doaj   +3 more sources

Optimization of Medium Constituents for the Production of Citric Acid from Waste Glycerol Using the Central Composite Rotatable Design of Experiments

open access: yesMolecules, 2023
Citric acid is currently produced by submerged fermentation of sucrose with the aid of Aspergillus niger mold. Its strains are characterized by a high yield of citric acid biosynthesis and no toxic by-products.
Ewelina Ewa Książek   +3 more
doaj   +1 more source

Chemical speciation and mobilization of copper and zinc in naturally contaminated mine soils with citric and tartaric acids [PDF]

open access: yes, 2013
A one-step extraction procedure and a leaching column experiment were performed to assess the effects of citric and tartaric acids on Cu and Zn mobilization in naturally contaminated mine soils to facilitate assisted phytoextraction.
Alberto Masaguer   +32 more
core   +2 more sources

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