Citric acid modified agricultural by-products as copper ion adsorbents

2000 ◽  
Vol 4 (1) ◽  
pp. 1-7 ◽  
Author(s):  
L.H Wartelle ◽  
W.E Marshall
Keyword(s):  
Citric Acid ◽  
Copper Ion ◽  
By Products

By-products from the biodiesel chain as a substrate to citric acid production by solid-state fermentation

2014 ◽  
Vol 32 (7) ◽  
pp. 653-660 ◽  
Author(s):  
Manuella Schneider ◽  
Gabriela F Zimmer ◽  
Ezequiel B Cremonese ◽  
Rosana de C de S Schneider ◽  
Valeriano A Corbellini
Keyword(s):  
Citric Acid ◽  
Solid State ◽  
Solid State Fermentation ◽  
Acid Production ◽  
Citric Acid Production ◽  
By Products

scholarly journals Fermentation of Musa paradisiaca Peels to Produce Citric Acid

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Mariel Monrroy ◽  
Lineth Rueda ◽  
Anaís L. Aparicio ◽  
José Renán García
Keyword(s):  
Citric Acid ◽  
Compositional Analysis ◽  
Food Product ◽  
Solid Substrate ◽  
Production Volume ◽  
Musa Paradisiaca ◽  
Nutritional Conditions ◽  
Production Techniques ◽  
Increasing Demand ◽  
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Among organic acids, citric acid (CA) features the highest production volume and the greatest economic potential. The steadily increasing demand for CA necessitates the improvement and diversification of the corresponding production techniques via the incorporation of more environmentally friendly and less costly processes such as the bioconversion of agroindustrial by-products. Musa paradisiaca, known as plantain, is a food product of global importance; however, the related by-products are scarcely utilized. Herein, we investigate CA production from M. paradisiaca peels via fermentation with Aspergillus niger. Compositional analysis shows that the above peels contain 623 g·kg−1 total carbohydrates, 374 g·kg−1 starch, and 91 g·kg−1 protein and therefore are rather rich in carbon, with other elements contained in substantial amounts corresponding to K (28 g·kg−1), N (10 g·kg−1), Fe (39 mg·kg−1), Na (71 mg·kg−1), Zn (16 mg·kg−1), and Cu (18 mg·kg−1). Evaluation of solid-substrate fermentation conditions (pH and inoculum loading) reveals that CA production is maximized (29 g·kg−1) at 10% consistency, 30°C, pH 1.4, and inoculum loading = 20 mg, demonstrating that pH is the most important parameter determining fermentation efficiency. As a result, M. paradisiaca peels are concluded to be a suitable substrate for CA biosynthesis via fermentation with A. niger under optimal nutritional conditions.

scholarly journals Effect of Citric Acid Modification of Aspen Wood on Sorption of Copper Ion

2006 ◽  
Vol 3 (1) ◽  
pp. 43-58 ◽  
Author(s):  
James D. McSweeny ◽  
Roger M. Rowell ◽  
Soo-Hong Min
Keyword(s):  
Citric Acid ◽  
Copper Ion ◽  
Aspen Wood ◽  
Acid Modification

scholarly journals Electroencephalographical correlates of cortex stage of sensory citric acid perception

2019 ◽  
pp. 33-39
Author(s):  
Alena M. Savaneuskaya
Keyword(s):  
Citric Acid ◽  
High Frequency ◽  
Brain Cortex ◽  
Wide Spectrum ◽  
Taste Perception ◽  
Oral Stimulation ◽  
Complex Stimuli ◽  
Cortex Area ◽  
Taste Sense ◽  
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The article deals with the methodological problem faced while identifying the EEG-correlate of taste sense by perception of complex stimuli involving a wide spectrum of sensory systems. As an example we defined a brain cortex activity pattern by tasting citric acid. As a result most promising taste perception correlate was found in beta high frequency band of right frontal cortex area. Other loci of brain cortex activity observed by citric acid presentation reflect non-taste perception forms appearing as by-products of oral stimulation.

scholarly journals Effect of acetic and citric acid solvent combination with cinnamon oil on quality of edible packaging from chitosan

2021 ◽  
Vol 919 (1) ◽  
pp. 012033
Author(s):  
J E Tambunan ◽  
A Chamidah
Keyword(s):  
Citric Acid ◽  
Essential Oil ◽  
Barrier Properties ◽  
Inhibition Zone ◽  
Cinnamon Oil ◽  
Randomized Design ◽  
Edible Packaging ◽  
Cinnamon Essential Oil ◽  
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Abstract Chitosan is one of the fishery by-products, which is extracted from shrimp and crab carapace. Chitosan can be processed into edible packaging. The nature of chitosan edible packaging is depended on the type of solvent used while extraction. Acetic acid produces a strong coating with good barrier properties but less elastic, while citric acid produces an elastic layer but has relatively low barrier properties and weak coating. Cinnamon essential oil can inhibit bacterial growth. This study aimed to obtain the best proportion combination of acetic and citric acid solvents which can improve mechanical properties and permeability of the edible packaging, also determine the effect of cinnamon essential oil in inhibiting Salmonella and S. aureus bacteria. The experimental design used a completely randomized design (CRD), with solvent combination treatment in preliminary research initially followed by chitosan and cinnamon essential oil addition in the subsequent research. Data showed that the best edible packaging properties were obtained from a combination of acetic and citric acid (2:2) with 30.67 MPa tensile strength, 65.35% elongation, 0.0422 mm thickness, and moisture permeability 3.02x10−10 g.m.m−2.s−1.pa−1. The concentration of 1.5 g of chitosan with 1.5% cinnamon essential oil can produce an antibacterial with 10.15 mm inhibition zone diameter in Salmonella sp. and 9.53 mm in Staphylococcus aureus

Citric acid treatment of flax, cotton and blended nonwoven mats for copper ion absorption

2007 ◽  
Vol 26 (1) ◽  
pp. 8-13 ◽  
Author(s):  
Wayne E. Marshall ◽  
Danny E. Akin ◽  
Lynda H. Wartelle ◽  
Patricia A. Annis
Keyword(s):  
Citric Acid ◽  
Acid Treatment ◽  
Copper Ion ◽  
Ion Absorption ◽  
Nonwoven Mats

scholarly journals PHYTOAVAILABILITY OF COPPER IN INDUSTRIAL BY-PRODUCTS AND MINERAL FERTILIZERS

2015 ◽  
Vol 39 (2) ◽  
pp. 553-562 ◽  
Author(s):  
Camila Prado Cenciani de Souza ◽  
Cleide Aparecida de Abreu ◽  
José Francisco da Cunha ◽  
Geraldo Magela da Costa ◽  
Cristiano Alberto de Andrade
Keyword(s):  
Acetic Acid ◽  
Citric Acid ◽  
Hot Water ◽  
Ammonium Citrate ◽  
Mineral Fertilizers ◽  
Buffer Solution ◽  
Solution Ph ◽  
Agronomic Efficiency ◽  
Cu Content ◽  
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Alternative copper (Cu) sources could be used in fertilizer production, although the bioavailability of copper in these materials is unknown. The objective of this study was to evaluate the extractants neutral ammonium citrate (NAC), 2 % citric acid, 1 % acetic acid, 10 % HCl, 10 % H2SO4, buffer solution pH 6.0, DTPA, EDTA, water, and hot water in the quantification of available Cu content in several sources, relating them to the relative agronomic efficiency (RAE) of wheat grown in a clayey Latossolo Vermelho eutrófico (Oxisol) and Neossolo Quartzarênico (Typic Quartzipsamment). Copper was applied at the rate of 1.5 mg kg-1 as scrap slag, brass slag, Cu ore, granulated copper, and copper sulfate. The extractants 10 % HCl, 10 % H2SO4, and NAC extracted higher Cu concentrations. The RAE values of brass slag and Cu ore were similar to or higher than those of Cu sulfate and granulated Cu. Solubility in the 2nd NAC extractant, officially required for mineral fertilizers with Cu, was lower than 60 % for the scrap slag, Cu ore, and granulated copper sources. This fact indicates that adoption of the NAC extractant may be ineffective for industrial by-products, although no extractant was more efficient in predicting Cu availability for wheat fertilized with the Cu sources tested.

scholarly journals Evaluation of the effects of mandarin (Citrus reticulate) by-products containing citric acid on immobilization of cadmium in arable soils

2019 ◽  
Vol 62 (1) ◽  
Author(s):  
Hyun Ho Lee ◽  
Do Young Heo ◽  
Hae Ri Han ◽  
Ye Lim Park ◽  
Chuanpit Ruangcharus ◽  
...  
Keyword(s):  
Citric Acid ◽  
Arable Soils ◽  
Citrus Reticulate ◽  
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