β-carotene production from soap stock by loofa-immobilized Rhodotorula rubra in an airlift photobioreactor

Alipour, Sajad; Habibi, Alireza; Taavoni, Shoeib; Varmira, Kambiz

doi:10.1016/j.procbio.2016.12.013

Cited by 24 publications

(26 citation statements)

References 32 publications

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“…The total working volume of the reactor was 450 ml, and a feed reservoir was contacted to the reactor by a varying speed peristaltic pump (Heidolph, pump drive 5202). On the basis of the previous work, the cultivation medium was consisted of the following ingredients (g L −1 ): KH 2 PO 4 , 1.0; K 2 HPO 4, 1.0; (NH 4 ) 2 SO 4, 5.0; MgSO 4 .7H 2 O, 0.1; the soap stock, 100; and TWEEN 80, 10. The reactor and medium were separately sterilized in an autoclave at 121 °C for 20 min.…”

Section: Methodsmentioning

confidence: 99%

“…In the reactor, the aeration supplied by air provides the force to going up of cultivation medium into the riser and then coming down in the downcomer section. The aeration rate was set at 0.1 vvm . The reactor was equipped with 120 small white LED lumps which normally distributed in around of the reactor.…”

Section: Methodsmentioning

confidence: 99%

“…The reactor was equipped with 120 small white LED lumps which normally distributed in around of the reactor. The light irradiation intensity was adjusted at 3000 Lux using a control system . On the basis of the previous works, the cultivation temperature was set at 30 ± 2 °C using a thermostat chamber and the initial pH of the medium was adjusted at 6.5 using 2 N HCl solution .…”

Section: Methodsmentioning

confidence: 99%

“…According to the previous finding, β‐carotene is the main carotenoid pigments produced by the yeast when the fatty acids of soap stock are used as sole carbon source . So the absorbance value of the extract pigment in petroleum ether at 445 nm was measured, and the concentration of the produced pigment was reported according to a β‐carotene standard curve.…”

Section: Methodsmentioning

confidence: 99%

“…Diversity of the metabolite activities in yeast genera provided that the carotenoid production can industrially become feasible using low cost agro‐industrial by‐products as nutrient sources. The microbial production is an environmental friendly method compared to chemicals in minimizing environmental problems related to residues and effluent disposal . A number of studies have been reported by the fermentation of various agricultural wastes such as oats, wheat, rice, sugar cane molasses, grape must, cheese whey, and soap stock in the last decade …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Kinetics of continuous production of β‐carotene in an airlift bioreactor

Taavoni

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Varmira

et al. 2017

Asia-Pacific J Chem Eng

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The focus in the present work was on the continuous β-carotene production from free fatty acids supplied by the soap stock as a sole carbon source for Rhodotorula rubra cells in an airlift bioreactor. The effects of dilution rate on the cell growth and β-carotene production were studied by both freely suspended-and immobilized-cell systems in the chemostat operations. The results showed that the immobilization of the cell on natural sponge of loofah significantly increased the optimum and maximum dilution rates from 0.0375 to 0.05 hr −1 and 0.055 to 0.150 hr −1 , respectively. The immobilization process has practical role in balancing of cell proliferation in the matrix and wash out the grown cells containing β-carotene from the bioreactor where β-carotene productivity was enhanced from 5.4 to 23.4 mg L −1 hr −1 using the immobilized cell technology.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinetics of continuous production of β‐carotene in an airlift bioreactor

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A Review of the Chemistry and Biological Activities of Natural Colorants, Dyes, and Pigments: Challenges, and Opportunities for Food, Cosmetics, and Pharmaceutical Application

Pasdaran

Zare

Hamedi

et al. 2023

Chemistry & Biodiversity

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Natural pigments are important sources for the screening of bioactive lead compounds. This article reviewed the chemistry and therapeutic potentials of over 570 colored molecules from plants, fungi, bacteria, insects, algae, and marine sources. Moreover, related biological activities, advanced extraction, and identification approaches were reviewed. A variety of biological activities, including cytotoxicity against cancer cells, antioxidant, anti‐inflammatory, wound healing, anti‐microbial, antiviral, and anti‐protozoal activities, have been reported for different pigments. Considering their structural backbone, they were classified as naphthoquinones, carotenoids, flavonoids, xanthones, anthocyanins, benzotropolones, alkaloids, terpenoids, isoprenoids, and non‐isoprenoids. Alkaloid pigments were mostly isolated from bacteria and marine sources, while flavonoids were mostly found in plants and mushrooms. Colored quinones and xanthones were mostly extracted from plants and fungi, while colored polyketides and terpenoids are often found in marine sources and fungi. Carotenoids are mostly distributed among bacteria, followed by fungi and plants. The pigments isolated from insects have different structures, but among them, carotenoids and quinone/xanthone are the most important. Considering good manufacturing practices, the current permitted natural colorants are: Carotenoids (canthaxanthin, β‐carotene, β‐apo‐8′‐carotenal, annatto, astaxanthin) and their sources, lycopene, anthocyanins, betanin, chlorophyllins, spirulina extract, carmine and cochineal extract, henna, riboflavin, pyrogallol, logwood extract, guaiazulene, turmeric, and soy leghemoglobin.

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Cost‐effective process for the production of Monascus pigments using potato pomace as carbon source by fed‐batch submerged fermentation

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et al. 2021

Food Science & Nutrition

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β-carotene production from soap stock by loofa-immobilized Rhodotorula rubra in an airlift photobioreactor

Cited by 24 publications

References 32 publications

Kinetics of continuous production of β‐carotene in an airlift bioreactor

Kinetics of continuous production of β‐carotene in an airlift bioreactor

A Review of the Chemistry and Biological Activities of Natural Colorants, Dyes, and Pigments: Challenges, and Opportunities for Food, Cosmetics, and Pharmaceutical Application

Cost‐effective process for the production of Monascus pigments using potato pomace as carbon source by fed‐batch submerged fermentation

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