Modelling of the acid hydrolysis of potato (Solanum tuberosum) for fermentative purposes

Guerra-Rodríguez, Esther; Rivera, Óscar Manuel Portilla; Ramı́rez, José A.; Vázquez, Manuel

doi:10.1016/j.biombioe.2012.03.019

Cited by 14 publications

(14 citation statements)

References 24 publications

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“…The enrichment of Garnacha bagasse hydrolysate with non-commercial potato waste hydrolysate may increase the monosaccharide content (mainly glucose) of the culture medium to enhance the growth of K. xylinus and the BC production. A previous work evaluated the acid hydrolysis with sulfuric acid of non-commercial potatoes to obtain glucose for fermentative purposes [ 16 ]. The data showed a glucose concentration of 73.08 ± 0.09 g/L after a hydrolysis treatment at 130 °C for 60 min with a 2% sulfuric acid solution and a solid/liquid ratio of 1:10 [ 16 ].…”

Section: Resultsmentioning

confidence: 99%

“…The main compound of potato is starch. It is composed of two polysaccharides: the linear molecule amylose, which consists of glucose polymers connected predominantly by α-1,4 bonds, and amylopectin, the main macromolecular component of starch and responsible for the structure of starch granules [ 16 ]. The contribution of potato starch to total starch production in the EU is 15–20% and 3–4% worldwide.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, potato starch production in Europe has been approximately 1.7 million tons per year [ 17 ]. Due to their content of starch, cellulose, hemicelluloses and fermentable sugars, potato residues (non-commercial potatoes, potato peelings, potatoes with high content of glucoalkaloids α-solanine, and α-chaconine) are a good substrate for biotechnological processes [ 16 ]. A previous study evaluated the use of potato peel waste [ 18 ] for the low-cost production of BC.…”

Section: Introductionmentioning

confidence: 99%

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Production and Characterization of Active Bacterial Cellulose Films Obtained from the Fermentation of Wine Bagasse and Discarded Potatoes by Komagateibacter xylinus

2022

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Potato waste, such as peels, broken or spoiled potatoes and grape bagasse residues from the winery industry, can be used for the biotechnological production of high-value products. In this study, green, sustainable and highly productive technology was developed for the production of antioxidant bacterial cellulose (BC). The aim of this work was to evaluate the feasibility of a low-cost culture medium based on wine bagasse and potato waste to synthesize BC. Results show that the production of BC by Komagateibacter xylinus in the GP culture medium was five-fold higher than that in the control culture medium, reaching 4.0 g/L BC in 6 days. The compounds of the GP culture medium improved BC production yield. The mechanical, permeability, swelling capacity, antioxidant capacity and optical properties of the BC films from the GP medium were determined. The values obtained for the tensile and puncture properties were 22.77 MPa for tensile strength, 1.65% for elongation at break, 910.46 MPa for Young’s modulus, 159.31 g for burst strength and 0.70 mm for distance to burst. The obtained films showed lower permeability values (3.40 × 10−12 g/m·s·Pa) than those of other polysaccharide-based films. The BC samples showed an outstanding antioxidant capacity (0.31–1.32 mg GAE/g dried film for total phenolic content, %DPPH• 57.24–78.00% and %ABTS•+ 89.49–86.94%) and excellent UV-barrier capacity with a transmittance range of 0.02–0.38%. Therefore, a new process for the production of BC films with antioxidant properties was successfully developed.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Production and Characterization of Active Bacterial Cellulose Films Obtained from the Fermentation of Wine Bagasse and Discarded Potatoes by Komagateibacter xylinus

2022

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“…Many researchers have developed growth media from agro-industry waste, like acid hydrolysates from potato, sorghum, wheat straw, and sugar cane molasses at a reasonable cost for the production of transglutaminase. [159][160][161][162] However, the solution's generation of harmful by-products like acetic acid and furfural,5-(hydroxymethyl)-2-furaldehyde inhibits microbial growth. This is the main weakness of acid hydrolysates.…”

Section: Transglutaminasementioning

confidence: 99%

“…In most cases, the media designed for Streptomyces growth are highly expensive due to costly components like mineral salts, peptone, and yeast extract. Many researchers have developed growth media from agro‐industry waste, like acid hydrolysates from potato, sorghum, wheat straw, and sugar cane molasses at a reasonable cost for the production of transglutaminase 159–162 . However, the solution's generation of harmful by‐products like acetic acid and furfural,5‐(hydroxymethyl)‐2‐furaldehyde inhibits microbial growth.…”

Section: Clinically Important Secondary Metabolitesmentioning

confidence: 99%

Biotechnological and industrial applications of Streptomyces metabolites

Khushboo

Kumar

Dubey

et al. 2021

Biofuels Bioprod Bioref

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Streptomyces sp. produces clinically important bioactive compounds with anticancer, antiviral, and antibacterial properties. These compounds have important roles in various fields like agriculture, and medicine, with bio-economic benefits. Progress in genome mining has resulted in the characterization of various secondary metabolites such as lipstatin, macrolide lactones, clavulanic acid, and cholesterol oxidase. Integration of DNA sequencing with computational tools has provided information regarding the biosynthetic pathways of secondary metabolites. This information is leading to the modulation of associated metabolic pathways to expand the biotechnological and industrial applications of metabolites. The increased utilization of bioactive compounds requires sustainable production to improve the bioeconomy. In this review, the authors discuss the bioactive compounds isolated from Streptomyces and advanced approaches to improve their production.

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