Valorisation of wheat bran to produce natural pigments using selected microorganisms

Cassarini, Mathieu; Besaury, Ludovic; Rémond, Caroline

doi:10.1016/j.jbiotec.2021.08.003

Cited by 21 publications

(7 citation statements)

References 88 publications

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“…2021)) ( P < 0·05, n = 3) A ratio superior to 1 was detected for the band 1732 cm −1 which corresponds to the –C = O structure (esterified carboxyl groups) which was assigned to hemicellulose (Cassarini et al . 2021) molecules (1·05 ± 0·17) ( P > 0·05, n = 3).…”

Section: Resultsmentioning

confidence: 94%

“…On the other hand, positive ratios were obtained for the asymmetric bridge C-O-C associated with the cellulose (Liu et al 2005) with a band at 1100 cm À1 and values of 1Á07 AE 0Á03 (P > 0Á05, n = 3) and C = O conjugated stretching-xylans functions (Sain and Panthapulakkal 2006) corresponding to hemicellulose (1Á06 AE 0Á10) (P > 0Á05, n = 3). For WB, degradation ratios were observed at 896 cm À1 which correspond to C À H deformation vibrations of b-glycosidic linkage (Zhao et al 2018) assigned to cellulose groups (0Á85 AE 0Á03) (P < 0Á05, n = 3) and at the absorption band 1510 cm À1 (0Á89 AE 0Á15 attributed to C = C bond vibrations typical of aromatic systems (Sisti et al 2021)) (P < 0Á05, n = 3) A ratio superior to 1 was detected for the band 1732 cm À1 which corresponds to the -C = O structure (esterified carboxyl groups) which was assigned to hemicellulose (Cassarini et al 2021) molecules (1Á05 AE 0Á17) (P > 0Á05, n = 3).…”

Section: Modification Of Wb and Ws Functional Groups After Microbial ...mentioning

confidence: 96%

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Culturable and metagenomic approaches of wheat bran and wheat straw phyllosphere’s highlight new lignocellulolytic microorganisms

Besaury

Rémond

2022

Letters in Applied Microbiology

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Significance and Impact of the Study: The phyllosphere's co-products represent then a niche where microorganisms have acquired the ability to degrade lignocellulosic plant cell walls in order to survive oligotrophic conditions. This manuscript highlights by a polyphasic study the role played by unprecedently characterized lignocellulytic µorganisms which are present only on the phyllophere of the co-products (wheat bran and wheat straw) and may present new specificities in order to degrade that lignocellulosic plant cell wall. Moreover, new enzymatic and metabolic pathways are present among those phyllospheric µorganisms. It also highlights the degradation of some specific chemical functions in the different consortia (wheat bran and wheat straw) depending on the microbial diversity. The whole work is thus promising for the context of biomass refinery.

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Section: Resultsmentioning

confidence: 94%

Section: Modification Of Wb and Ws Functional Groups After Microbial ...mentioning

confidence: 96%

Culturable and metagenomic approaches of wheat bran and wheat straw phyllosphere’s highlight new lignocellulolytic microorganisms

Besaury

Rémond

2022

Letters in Applied Microbiology

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“…The large-scale production of microbial pigments is seriously limited by the production-purification costs and regulations in dominant pharmaceutical countries. In 2018, the world market for organic dyes was valued at U$D 3.5 billion, with an estimated growth of about 37% by 2024 (Cassarini et al, 2021). The most representative studies on violacein production are briefly described below, including the use of recombinant microorganisms and the new trend of recycling waste in the frame of the circular economy.…”

Section: Violacein Productionmentioning

confidence: 99%

“…Microparticulate wheat bran, a low-cost substrate with high lignocellulose content, was used to supplement the Luria-Bertani medium for violacein production using C. vaccinii in batch culture (Cassarini et al, 2021). The optimal violacein production was 0.208 g L -1 after 73 h of culture.…”

Section: Figurementioning

confidence: 99%

Potential biocide roles of violacein

Berti

Gantner

Rodrı́guez

et al. 2023

Front. Nanotechnol.

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Violacein is a pigment produced by Gram-negative bacteria, which has shown several beneficial biological activities. The most relevant activities of violacein include the interference in the physiological activities of biological membranes, inhibition of cell proliferation, antioxidant, and anti-inflammatory activities. Moreover, the antiviral activities of violacein against some enveloped and non-enveloped viruses have also been reported. Violacein showed a wide spectrum of protease inhibition, both experimentally and in silico. Other in silico studies have suggested that violacein binds to the SARS-CoV-2 spike. Empirical physicochemical studies indicate that violacein (or, occasionally, its derivatives) may be administered orally to treat different disorders. In addition, different alternatives to product violacein, and molecular devices for delivery of this pigment are reviewed.

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“…The second group is xanthophylls, such as astaxanthin, canthaxanthin, zeaxanthin, lutein, torularhodin, β-cryptoxanthin, and fucoxanthin [2]- [5]. Natural carotenoids are found in algae, plants, animals, fungi, cyanobacteria, bacteria [6], [7], and protists [8]. The primary function of carotenoids in plants, algae, and photosynthetic bacteria is photoprotection, i.e., the ability to quench reactive oxygen species formed during photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Microbial Carotenoids Production: Strains, Conditions, and Yield Affecting Factors

Raita,

Feldmane,

Kusnere

et al. 2023

Environmental and Climate Technologies

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The research and development of carotenoid production has a long history, and interest in this group of pigments has not decreased to this day. Six existing carotenoids are considered industrially important: astaxanthin, β-carotene, lutein, zeaxanthin, canthaxanthin, and lycopene. These carotenoids have a wide range of applications and are used as additives in food and beverages, feed, nutraceuticals, pharmaceuticals, and cosmetics products due to their bioactive and pigmentation properties. Currently, the global pigment market is dominated by chemically synthesized carotenoids. Carotenoids derived from natural sources such as plants and microorganisms are not as popular or widespread. Currently, the market of natural carotenoids is mainly represented by microalgae Haematococcus pluvialis, Dunaliella salina, Botryococcus braunii, fungus Blakeslea trispora, yeast Phaffia rhodozyma and bacteria Paracoccus carotinifaciens. These microorganisms produce astaxanthin, β-carotene, canthaxanthin, and lycopene. Several yeast and bacteria species from Rhodotorula, Sporobolomyces, Sporidiobolus, Gordonia, and Dietzia genus can potentially become sources of carotenoids on an industrial scale, but available technologies still need improving. This paper reviews strategies for increasing the competitiveness of fungal and bacterial carotenoid production. Strategies such as selecting carotenogenic strains, using low-cost substrates, stimulating the synthesis of carotenoids by adding trace elements, TCA intermediates, NaCl, H2O2, light irradiation, and optimization of fermentation conditions such as pH, temperature and aeration are considered.

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Valorisation of wheat bran to produce natural pigments using selected microorganisms

Cited by 21 publications

References 88 publications

Culturable and metagenomic approaches of wheat bran and wheat straw phyllosphere’s highlight new lignocellulolytic microorganisms

Culturable and metagenomic approaches of wheat bran and wheat straw phyllosphere’s highlight new lignocellulolytic microorganisms

Potential biocide roles of violacein

Microbial Carotenoids Production: Strains, Conditions, and Yield Affecting Factors

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