A new strain ofRhodotorula rubra isolated from yogurt

Hari, Ravinder P. K.; Patel, Thakor R.; Martı́n, A.

doi:10.1007/bf01583731

Cited by 13 publications

(6 citation statements)

References 12 publications

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“…This was confirmed by comparing the nutritional and biochemical properties with another strain of Rhodotowla rubru ATCC 9449. The identification results were also confirmed by Microcheck Inc. (Norlhlield, VT) using their technique of cell wall fatty acid analysis (HARI et al 1992).…”

Section: Methodsmentioning

confidence: 99%

“…This yeast produces carotenoids which have a potential as a colorant for aquacultured fish, an attractive commercial application. Using reverse-phase HPLC, the isolate has been shown to produce 80 times more pigment than Phaffia rhodozyma under similar cultural conditions (HARI et al 1992). An effort was made to choose the best carbon and nitrogen sources for its propagation in a batch culture system.…”

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confidence: 98%

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Growth kinetics of Rhodotorula rubra on different substrates

Hari

Patel

Martı́n

1993

J. Basic Microbiol.

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The growth of a red-pigmented yeast, isolated from yogurt and identified as Rhodotorulu rubra, was studied on various industrial and agricultural by-products. Peat hydrolysate when supplemented with peptone and yeast extract supported a satisfactory growth of the yeast. Ammonium hydroxide and ammonium sulfate were the best inorganic nitrogen sources. A yield of 11.8 g/1 was obtained on molasses and wort used in aconcentration of 10 and 40% (v/v), respectively. Molasses were pre-treated to be effective. The best yield of 14 g/l, however, was obtained on a richer medium composed of molasses, peptone and yeast extract. The pH profiles were also studied and growth was found within a broad pH zone of 3 -10.

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Section: Methodsmentioning

confidence: 99%

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confidence: 98%

Growth kinetics of Rhodotorula rubra on different substrates

Hari

Patel

Martı́n

1993

J. Basic Microbiol.

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“…A variety of yeasts can grow well in Sauerkraut brine without nutrient addition and significantly reduce the BOD (2). Recently there has been increased interest in the production of yeast carotenoids for commercial applications (3,4). The objective of the present study was to determine the potential of Sauerkraut brine as a substrate for the production of carotenoids by Rhodotorula rubra.…”

Section: Introductionmentioning

confidence: 99%

Production of Carotenoids by from Sauerkraut Brine

Shih

Hang

1996

LWT - Food Science and Technology

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“…However, the β ‐carotene content in wild strains of Rhodotorula spp. is very low (Hari et al. 1992; Perrier et al.…”

Section: Introductionmentioning

confidence: 99%

“…However, the b-carotene content in wild strains of Rhodotorula spp. is very low (Hari et al 1992;Perrier et al 1995). Attempts have been made to improve the b-carotene content in this yeast so as to make the pigment production commercially viable (Sakaki et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Stability of beta-carotene in spray dried preparation of Rhodotorula glutinis mutant 32

2003

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Aims: To obtain b-carotene-rich dry cell preparation from mutant 32 of Rhodotorula glutinis and determination of its pigment stability. Methods and Results: The mutant 32 of R. glutinis was grown in a 14 l stirred tank fermenter. Cell mass was concentrated 10-fold by cross-flow microfiltration and then spray dried. Butylated hydroxy toluene (BHT) and D D-tocopherol were used as protecting agents. A two-level, three-variable, factorial optimization was performed to achieve moisture-free, non-viable and b-carotene-rich feed additive. Conclusions: The b-carotene and cell mass in stirred tank fermenter were found to be 54 ± 5 mg l )1 and 12AE8 ± 2 g l )1 , respectively. In the presence of BHT, 97 ± 3% (w/w) b-carotene was recovered for all the inlet temperatures studied. The best b-carotene and yeast powder recoveries were obtained at 160°C, 11AE6% (w/v) cell mass concentration and 1 g l )1 BHT. The pigments inside dried yeast powder were stable in dark and cold condition for at least 10 weeks. The purified b-carotene got almost totally denatured, under similar conditions of storage, within 76 h. Significance and Impact of the Study: Spray dried and stable preparation of b-carotene-rich yeast, R. glutinis can provide alternative source of b-carotene for use in animal nutrition.

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A new strain ofRhodotorula rubra isolated from yogurt

Cited by 13 publications

References 12 publications

Growth kinetics of Rhodotorula rubra on different substrates

Growth kinetics of Rhodotorula rubra on different substrates

Production of Carotenoids by from Sauerkraut Brine

Stability of beta-carotene in spray dried preparation of Rhodotorula glutinis mutant 32

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