Biotechnological applications of sugarcane bagasse and sugar beet molasses

Due to its pleasant rosy scent, the aromatic alcohol 2-phenylethanol (2-PE) has a huge market demand. Since this valuable compound is used in food, cosmetics and pharmaceuticals, consumers and safety regulations tend to prefer natural methods for its production rather than the synthetic ones. Natural 2-PE can be either produced through the extraction of essential oils from various flowers, including roses, hyacinths and jasmine, or through biotechnological routes. In fact, the rarity of natural 2-PE in flowers has led to the inability to satisfy the large market demand and to a high selling price. Hence, there is a need to develop a more efficient, economic, and environmentally friendly biotechnological approach as an alternative to the conventional industrial one. The most promising method is through microbial fermentation, particularly using yeasts. Numerous yeasts have the ability to produce 2-PE using l-Phe as precursor. Some agro-industrial waste and by-products have the particularity of a high nutritional value, making them suitable media for microbial growth, including the production of 2-PE through yeast fermentation. This review summarizes the biotechnological production of 2-PE through the fermentation of different yeasts on synthetic media and on various agro-industrial waste and by-products.

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“…The estimated price of beet molasses is around 0.132 US$/kg. Molasses have been used for microbial production of 2-PE [ 68 , 69 , 70 , 71 ].…”

Section: 2-pe Production Via Fermentation On Agro-industrial Waste and By-productsmentioning

confidence: 99%

Bioproduction of 2-Phenylethanol through Yeast Fermentation on Synthetic Media and on Agro-Industrial Waste and By-Products: A Review

Mitri

Koubàa

Maroun

et al. 2022

Foods

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“…Amino acids also have been utilized for melanin production through whole cell biotransformation, in addition to the use of sugar-based fermentation including glucose, starch, and molasses ( Ghadge et al, 2020 ; Oh et al, 2020 ; Eskandari and Etemadifar, 2021 ). For example, Eskandari and Etemadifar reported cost effective melanin production using Pseudomonas koreensis UIS19 in a molasses medium with tyrosine supplementation ( Mustafa et al, 2020 ; Eskandari and Etemadifar, 2021 ). A total of 32 g/L of sugar was consumed to obtain 5.4 g/L of dry cell mass and 0.44 g dry melanin/g weight of yield could be achieved from supplemented tyrosine.…”

Section: Bioconversion Of Biomass Into Melaninmentioning

confidence: 99%

Bioprocess of Microbial Melanin Production and Isolation

Choi

2021

Front. Bioeng. Biotechnol.

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Melanin is one of the most abundant pigments found in the biosphere. Owing to its high biocompatibility and diverse biological activities, it has been widely applied as a functional biomaterial in the cosmetic, pharmaceutical, biopolymer, and environmental fields. In this study, the production of melanin was comprehensively reviewed concerning bioconversion and isolation processes. First, several melanogenic microbes, including fungi and bacteria, were summarized. Melanin production was classified by host and melanin type and was analyzed by titers in g/L in addition to reaction conditions, including pH and temperature. The production was further interpreted using a space-time yields chart, which showed two distinct classifications in productivity, and reaction conditions were analyzed using a pH-temperature-titer chart. Next, the extraction process was summarized by crude and pure melanin preparation procedures, and the extraction yields were highlighted. Finally, the recent applications of melanin were briefly summarized, and prospects for further application and development in industrial applications were suggested.

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“…Sugar beet molasses is produced annually in large amounts. This by-product is used in animal feeding [ 22 ] and ethanol production [ 23 ]. It is characterized by a brown color and contains some poorly biodegradable derivatives of phenolic compounds such as melanin and melanoidins.…”

Section: Introductionmentioning

confidence: 99%

“…It was found that the use of molasses had a positive effect on the physical structure of the soil and increased the biological activity of beneficial microorganisms [ 27 , 28 , 29 ]. Molasses contains a fairly high concentration of organic carbon and mineral elements, including nitrogen, phosphorus, potassium, magnesium, calcium, sulfur, iron, some important micronutrients, vitamin B and biotin [ 23 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Beet Molasses Enhance Salinity Tolerance in Thymus serpyllum—A Study under Greenhouse Condition

Koźmińska

Hanus-Fajerska

Halecki

et al. 2021

Plants

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The growing demand for Thymus serpyllum biomass to produce drugs, cosmetics and spices necessitates the search for innovative methods mitigating the negative effects of environmental stressors in order to improve its yield under unfavorable conditions. Due to the exposure of plants to salinity stress (SS), we investigated the effect of sugar beet molasses (SBM) on the growth and biochemical parameters related to plants’ response to SS. Wild thyme plants were treated for 5 weeks to sodium chloride and 3% molasses solution using two modes of application (soil irrigation or foliar sprays). Plants irrigated by SBM showed slighter stem growth inhibition than control plants, high stress tolerance index and maintained a constant root water content under salt stress. Moreover plants treated with 100 mM NaCl and soil-applied SBM had lower lipid peroxidation level, showed lower POD activity, higher total soluble protein content and maintained a more even free amino acids level, compared to the control treatments. The concentration of potassium ions was higher in the case of plant roots irrigation with sugar beet molasses compared to control plants. In this experiment, most of the growth and biochemical parameters from foliar molasses-sprayed plants did not differ significantly from the control. We provided evidence that soil-applied SBM beneficially changed the plant’s biochemical response to salt stress. On the basis of the obtained results, we conclude that this soil amendment contributes to the strengthening of plant protection against this harmful environmental factor.

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Biotechnological applications of sugarcane bagasse and sugar beet molasses

Cited by 29 publications

References 112 publications

Bioproduction of 2-Phenylethanol through Yeast Fermentation on Synthetic Media and on Agro-Industrial Waste and By-Products: A Review

Bioproduction of 2-Phenylethanol through Yeast Fermentation on Synthetic Media and on Agro-Industrial Waste and By-Products: A Review

Bioprocess of Microbial Melanin Production and Isolation

Beet Molasses Enhance Salinity Tolerance in Thymus serpyllum—A Study under Greenhouse Condition

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