Biosorption of Cr(VI) and Cu(II) by waste tea fungal biomass

Razmovski, Radojka N.; Šćiban, Marina

doi:10.1016/j.ecoleng.2008.07.020

Cited by 80 publications

(41 citation statements)

References 39 publications

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“…Accordingly, Topcu et al (2010) and Hatab et al (2012) found that the optimal removal of PAT from aqueous solution by bacterial cells was obtained at low pH values (pH 3.0 and 4.0). Kombucha tea mat has a high content of different functional groups on the cell walls and cellulose (i.e., hydroxyl, carboxyl, phosphate, and amino groups), which makes it very liable to the influence of pH (Razmovski & Šćiban, 2008).…”

Section: Discussionmentioning

confidence: 99%

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Detoxification of Patulin by Kombucha tea culture

Ismaiel

Bassyouni

Kamel

et al. 2015

CyTA - Journal of Food

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Kombucha is a refreshing beverage, obtained by fermenting sugared tea with a symbiotic culture of acetic acid bacteria and yeast, consumed for its positive effects on human health. In this study, the potential of kombucha supernatant for reduction of patulin (PAT) of three toxigenic fungal strains (Penicillium expansum LC015096, Talaromyces purpureogenus LC015095, and Acremonium implicatum LC015097) in liquid medium and apple fruit was investigated. In liquid medium, kombucha up to 10% (v/v) significantly inhibited PAT production of P. expansum by 77.2% and that of T. purpureogenus and A. implicatum by 100%. In apple fruit, inhibition percent of PAT accumulation by the respective fungal strains was 49.8%, 100%, and 53%. In aqueous solution, kombucha cells showed a relative greater PAT uptake capacity than Sacchromyces cerevisiae. The maximum PAT uptake (64.67% and 60.69%) by viable and heat-treated kombucha cells was achieved at pH 3.0 throughout 48 h incubation, respectively.Keywords: Kombucha tea; patulin (PAT); toxicity; apple; biosorption La Kombucha es una bebida refrescante obtenida a partir de la fermentación del té endulzado con un cultivo simbiótico de acetobacterias y levadura, el cual es consumido por sus efectos positivos para la salud. En este estudio, se investigó el potencial de la Kombucha sobrenadante para la reducción de patulina (PAT) de tres cepas de hongos tóxicos (Penicillium expansum LC015096, Talaromyces purpureogenus LC015095 y Acremonium implicatum LC015097) en medio líquido y zumo de manzana. En medio líquido, la Kombucha con un porcentaje de hasta 10% (v/v) inhibió significativamente la producción de PAT de P. expansum en un 77,2% y la de T. purpureogenus y A. implicatum en un 100%. En el zumo de manzana, el porcentaje de inhibición de la acumulación de PAT mediante las cepas de hongos respectivas fue de 49,8%, 100% y 53%. En la solución acuosa, las células de Kombucha mostraron una mayor capacidad relativa de absorción de PAT que en Sacchromyces cerevisiae. La capacidad máxima de absorción de PAT (64,67% y 60,69%) mediante células de Kombucha viables y tratadas con calor se consiguió con un pH 3,0 mediante incubación de 48 h, respectivamente.

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Section: Discussionmentioning

confidence: 99%

“…Kombucha mat was prepared as described by Razmovski and Šćiban (2008). It was washed with an adequate amount of distilled water to remove media components.…”

Section: Preparation Of Kombucha Mat and S Cerevisiae Cells For Pat mentioning

confidence: 99%

Detoxification of Patulin by Kombucha tea culture

Ismaiel

Bassyouni

Kamel

et al. 2015

CyTA - Journal of Food

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“…Spent tea (Camellia sinensis) was converted into biofuels at room temperature. The byproduct tea charcoal can be used as biosorbent for waste heavy metal's removal from water as reported by Razmovski and Sciban (2008).…”

Section: Manual4/milkchemistryhtm#topofpage)mentioning

confidence: 99%

Nanobiotechnology for the production of biofuels from spent tea

Mahmood¹,

Hussain²

2010

Afr. J. Biotechnol.

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Bioenergy is the only alternative and cheap source of energy which can be made easily available to the world. The present experiment included three steps for the conversion of spent tea (Camellia sinensis) into biofuels. In the first step, spent tea was gasified using Co nano catalyst at 300°C and atmospheric pressure. Catalytic gasification of spent tea yielded 60% liquid extract, 28% fuel gases and 12% charcoal. Gaseous products contain 53.03% ethene, 37.18% methanol and 4.59% methane. In the second step of the experiment, liquid extract of spent tea obtained from gasification, on transesterification gave 40.79% ethyl ester (biodiesel). In the third step, Aspergillus niger's growth on spent tea produced 57.49% bioethanol. This study reports an interesting finding that spent tea (solid waste) could be used not only for the production of biodiesel and bioethanol but also hydrocarbon fuel gases. The world today is consuming several million tons of tea yearly. The present technology could be utilized to produce alternate energy.

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“…The q m values for Cu 2+ and Pb 2+ ions at 60°C were 0.0891 mmol/g (5.66 mg/g) and 0.1127 mmol/g (23.35 mg/g), respectively. As comparison, the maximum sorption capacities of several biomass-based sorbents for sequestering copper and lead ions from water and wastewater are listed in Table 3 [32][33][34][35][36][37][38][39]. With respect to R L values, all systems exhibit favorable biosorption nature.…”

Section: Modeling Of Adsorption Isotherms 341 Single Component Systemmentioning

confidence: 99%