Production of carotenoids by <i>Rhodotorula glutinis</i>
 MT-5 in submerged fermentation using the extract from waste loquat kernels as substrate

Taşkın, Mesut; Erdal, Serkan

doi:10.1002/jsfa.4329

Cited by 35 publications

(17 citation statements)

References 28 publications

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“…In Turkey especially, feathers are not utilized for any purpose except for feather meal production and currently discarded. On the other hand, the utilization of organic wastes as substrate in production media is known as ecologically sound and economically advantageous (Taskin and Erdal 2011). Therefore, it can be said that the conversion of waste chicken feathers to the peptone will not only provide a new cheap substrate to microbial studies but also help the solution of environmental problems by reducing the amount of wastes.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of waste chicken feathers as peptone source for bacterial growth

Taşkın

Kurbanoğlu

2011

Journal of Applied Microbiology

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Aims: Peptones are one of the most expensive constituents of microbial media. This study was undertaken to prepare the peptone from waste chicken feathers through a new process. Methods and Results: The chemical analysis of chicken feather peptone (CFP) was performed. The ability of CFP to support the growth of the three test bacteria in liquid and agar media was comparable to those of three commercial peptones [tryptone peptone (TP), fish peptone and protease peptone (PP)]. Conclusions: CFP was found to be rich in ash (42·1 g 100 g−1), protein (55·8 g 100 g−1) and mineral contents. The maximum biomass yield (3·13 g l−1) and colony number (83 × 108 CFU ml−1) for bacterium Bacillus subtilis were attained with CFP. The maximum biomass yields and colony numbers for Lactobacillus delbrueckii ssp. bulgaricus and Escherichia coli were reached in TP medium. Second high biomass yield (2·64 g l−1) and colony number (75 × 108 CFU ml−1) for E. coli were achieved using CFP. Third high biomass yield (1·29 g l−1) and colony number (90 × 107 CFU ml−1) for Lact. delbrueckii ssp. bulgaricus were obtained in CFP medium. Significance and Impact of the Study: Usability of waste chicken feathers as substrate for bacteria was investigated for the first time in the present study. The peptone may be used in industrial fermentations for production of antibiotics, organic acids, enzymes and biopolymer. It may be also used in clinical microbiology. A new chemical process was developed for peptone preparation. This process may be also employed for peptone preparation from other organic materials, especially fibrose protein‐containing materials.

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Section: Discussionmentioning

confidence: 99%

Evaluation of waste chicken feathers as peptone source for bacterial growth

Taşkın

Kurbanoğlu

2011

Journal of Applied Microbiology

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“…It has been well-known that there has been a growing interest in the isolation of microorganisms from various sources for the production of industrially valuable microbial products (Taskin and Erdal, 2011). In this context, exploration of CA-producing new mould isolates may represent a significant contribution to fermentation studies.…”

Section: Isolation and Screening Of Mould Strainsmentioning

confidence: 99%

Citric acid production from Aspergillus niger MT-4 using hydrolysate extract of the insect Locusta migratoria

2012

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Citric acid (CA) is the most important organic acid used in the food and other industries. Locusta migratoria is an insect species, which has rich nutritional composition (especially protein) and cultivated in some countries. Therefore, the present study investigated the usability of hydrolysate extract of L. migratoria biomass as substrate for the production of CA from Aspergillus niger MT-4. The insect extract (IE) was found to be rich in ash (34.9 g/100 g), protein (35.6 g/100 g) and mineral contents. Yeast extract was found to be the most favorable substrate for biomass production, whereas the maximum production of CA (41.8 g/L) was achieved in the medium containing IE. Besides, uniform pellets with the smallest size (4 mm) were observed in IE medium. It was thought that rich magnesium (6.78 g/100 g) and manganese (1.14 g/100 g) contents of IE increased the production of CA, resulting in the formation of small uniform pellets. This is the first report on the effect of protein-rich insect biomasses on the production of CA. In this regard, L. migratoria biomass was tested for the first time as a CA-production substrate.

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“…Selections of a low-cost substrate and a microbial strain with high activity are accepted as very important aspects in microbial fermentations [11][12][13]30]. In this study, these aspects were optimized for maximum lactic acid production.…”

Section: Effect Of Calcium Carbonate On L-lactic Acid Synthesis and Cmentioning

confidence: 99%

“…The starch accounts for 25.6% of total carbohydrate and 36% of whole kernel, on dry weight basis [10]. Recently, we informed that loquat seed kernels could be used as a novel substrate for microbial production of carotenoids [11] and exopolysaccharides [12,13]. In another study, loquat kernel could be effectively used as a novel amylase production substrate thanks to its rich starch content [10].…”

Section: Introductionmentioning

confidence: 99%

L‐lactic acid production by Rhizopus oryzae MBG‐10 using starch‐rich waste loquat kernels as substrate

et al. 2012

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The objective of this work was to perform production of L-lactic acid from starch-rich waste loquat kernels by newly isolated Rhizopus oryzae MBG-10 fungus. Loquat kernel flour (LKF) was used as substrate (mainly as carbon source). The most favorable conditions for L-lactic acid production were LKF concentration of 80 g/L, CaCO 3 concentration of 20 g/L, ammonium sulfate concentration of 3 g/L and incubation time of 108 h. Under these conditions, L-lactic acid and biomass concentrations were 45.4 and 8.2 g/L, respectively, and a-amylase activity was 81.6 U/mL. No significant pH changes were observed in the medium thanks to the buffering capacity of LKF. L-lactic acid could be produced in a single-stage from starch-rich LKF without prior saccharification by the fungus with high amylolytic enzyme activity. This is the first report on use of waste loquat kernels as a lactic acid production substrate.

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Production of carotenoids by Rhodotorula glutinis MT-5 in submerged fermentation using the extract from waste loquat kernels as substrate

Cited by 35 publications

References 28 publications

Evaluation of waste chicken feathers as peptone source for bacterial growth

Evaluation of waste chicken feathers as peptone source for bacterial growth

Citric acid production from Aspergillus niger MT-4 using hydrolysate extract of the insect Locusta migratoria

L‐lactic acid production by Rhizopus oryzae MBG‐10 using starch‐rich waste loquat kernels as substrate

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