Poly-β-hydroxyalkanoates production from cassava starch hydrolysate by Cupriavidus sp. KKU38

Poomipuk, N; Reungsang, Alissara; Plangklang, Pensri

doi:10.1016/j.ijbiomac.2014.01.002

Cited by 94 publications

(45 citation statements)

References 49 publications

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“…This is likely due to ammonium ions in ammonium sulfate that increased the alteration of the metabolic PHA biosynthesis pathway. Nevertheless, this finding is in contrast with Poomipuk et al, (2014) who reported a N-limited condition that gave the greatest PHA content at 61.6% and a PHA yield of 0.20 g/g-total sugar…”

contrasting

confidence: 94%

“…When cells are grown under stressful conditions, i.e. an imbalance of nutrients, these cells usually convert the carbon source from sugar to PHA for energy storage (Poomipuk et al, 2014). PHAs are accumulated in the inclusion body (IB) and are specially produced rapidly when nitrogen and phosphorus in the nutrients are limited.…”

Section: Introductionmentioning

confidence: 99%

“…KKU38 (Poomipuk et al, 2014). This was thought to be due to the difference in nutrient demand between yeast and bacterial cells that grew before the cells were stressed and thus produced PHA.…”

mentioning

confidence: 99%

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The Potential of Rhodotorula graminis TISTR 5124 for Synthesis of Polyhydroxyalkanoate (PHA) by Limitation of a Phosphorus and Nitrogen Sourc

Tanangteerapong¹,

Prasathinpimai²,

Suebthamma³

et al. 2016

IJTech

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Polyhydroxyalkanoate (PHA) is one of the alternatively biodegradable plastics which can be synthesized from a particular micro-organism after the fermentation process, considering the optimization of nutrients. In this research, the yeast strain Rhodotorula graminis TISTR 5124 was selected to be fermented with a carbon source in the standard nutrient in order to conduct a preliminarily study on the best conditions for this yeast in PHA production. The growth rate curve of yeast in the composition of imbalanced nutrients, i.e. the limitation of phosphorus and nitrogen, was also investigated and compared with another sample cultured in standard nutrients. Experimental results indicated that the condition that gave the maximum growth rate of this yeast strain was a P-limited condition at 81 hours, whereby the cell number of 3.1×10 9 cells/mL was obtained and corresponded to the optical density (OD) of 0.95 measured at a wavelength of 600 nm. The synthesized PHA extracted from yeast cells after 81 hours of incubation was examined by Fourier transform infra-red (FT-IR) and nuclear magnetic resonance ( 1 H NMR) spectroscopy. The results indicated stretching vibrations similar to the copolymer PHBV (or a PHA derivative). Maximum PHA content of 54.4% was found in the Plimited condition which corresponded to a PHA yield of 65.1 (g/g-total sugar consumed) in which the yeast consumed the least glucose amount of 3.2 g/L, but grew the most rapidly. Rhodotorula graminis TISTR 5124 is therefore promising as a good candidate for alternatively biodegradable plastics, considering the potential to produce PHA and its derivatives. This process can be beneficial as an option to replace conventional plastics in the future.

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confidence: 94%

Section: Introductionmentioning

confidence: 99%

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The Potential of Rhodotorula graminis TISTR 5124 for Synthesis of Polyhydroxyalkanoate (PHA) by Limitation of a Phosphorus and Nitrogen Sourc

Tanangteerapong¹,

Prasathinpimai²,

Suebthamma³

et al. 2016

IJTech

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“…-Dextrose Equivalent of between 40 and 60: food industry [37] -Beverage and confectionary industry [38] -Used directly as a substrate for the manufacture of fermentation products (such as citric acid, lysine or ethanol or glutamic acid) [39] -Processed into other major starch derivatives, such as isoglucose, fructose syrup [37] Modified starches Substituted starches (starch esters, ethers, cross-linked starch): -Textiles [40] -Paper [41] Water treatment (flocculation) [42] Oil industry (fluid loss reducer) [43] Degraded/Converted starches: -Dextrins: Adhesives (gummed paper, bag adhesives, bottle labeling); [35] -Textiles (textile fabric finishing, printing); [44] Roast dextrin, oxidized starch, thin-boiled starch: -Acid-modified starches: Food industry (sweets) and Pharmaceuticals [45] -Oxidized starches: Food and paper industry (surface sizing, coating); [46] -Textile industry (fabric finishing, warp sizing) [47] -Enzymatically converted starch: paper industry and fermentation industry [48] Cross-linked starches: -Food industry (desserts, bakery products, soups, sauces) [49] -Textile industry (printing) [50] -Adhesives [51] -Pharmaceuticals [6]…”

Section: Applicabilitymentioning

confidence: 99%

New Starches are the Trend for Industry Applications: A Review

Santana¹,

Meireles²

2014

fph

151

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Starch is widely consumed by humans as an inexpensive and stable available carbohydrate source, and much work has been performed on the structure, functionality and applicability of starches. Although conventional sources of starch, such as corn and potato, other sources with improved properties are becoming significant to allow simpler and more robust processes. The feasibility of the use of new starches, i.e., legume, seed and palm, as renewable materials for commercial application may provide cost reduction of raw material in industries. Little information is available on the structure, properties and practical applicability of non-conventional sources of starch. Thus, it is necessary that these starches be studied to obtain and report their structural parameters, information that is required to gain competitiveness in an international-scale industry. A review of properties, applications, future trends and perspectives of some new starches is presented in this review.

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“…Some researchers reported utilization of acetate, butyrate, propionate, and valerate as precursors of different types of PHAs production purposes [7,8]. Utilization of cheap and renewable carbon sources such as the palm oil mill effluent, grass powder, rice waste biomass, waste glycerol, cassava starch hydrolysate, starch, organic waste, and fermentative effluents to decrease the cost of PHB production has been reported [6,[9][10][11]. Lignocellulosic biomass has been considered as an ideal feedstock for bioplastics (PHB) production being most abundant and renewable biomass on the earth [12].…”

Section: Introductionmentioning

confidence: 99%

Characterization of poly-3-hydroxybutyrate (PHB) produced from Ralstonia eutropha using an alkali-pretreated biomass feedstock

Saratale

2015

International Journal of Biological Macromolecules

112

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Poly-β-hydroxyalkanoates production from cassava starch hydrolysate by Cupriavidus sp. KKU38

Cited by 94 publications

References 49 publications

The Potential of Rhodotorula graminis TISTR 5124 for Synthesis of Polyhydroxyalkanoate (PHA) by Limitation of a Phosphorus and Nitrogen Sourc

The Potential of Rhodotorula graminis TISTR 5124 for Synthesis of Polyhydroxyalkanoate (PHA) by Limitation of a Phosphorus and Nitrogen Sourc

New Starches are the Trend for Industry Applications: A Review

Characterization of poly-3-hydroxybutyrate (PHB) produced from Ralstonia eutropha using an alkali-pretreated biomass feedstock

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