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An efficient method to produce 1,4-pentanediol from the biomass of the algae Chlorella ohadi with levulinic acid as intermediate.

ABSTRACT: Today, the development of innovative methods for production of organic compounds from natural resources is essential topic for many research groups in the worldwide. Levulinic acid is a platform for many important organic processes in the synthesis of natural products, pharmaceuticals, plasticizers, drugs and various other additives. In addition, 1,4-pentanediol which is a product of reduction of levulinic acid, is a valuable raw material in the chemical industry. Here, we report a highly efficient method for the production of levulinic acid from Chlorella ohadi algae using hydrothermal hydrolysis process by using HCl. Our methodology shows that the levulinic acid can be obtained in almost 90% molar yield compared to the glucose in Chlorella ohadi. Finally, we describe a one step reaction for the completely conversion of levulinic acid into 1,4-pentadiol in water using S. cerevisiae yeast as a catalyst.

SUBMITTER: Benisvy-Aharonovich E

PROVIDER: S-EPMC7402369 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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An efficient method to produce 1,4-pentanediol from the biomass of the algae <i>Chlorella ohadi</i> with levulinic acid as intermediate.

Benisvy-Aharonovich Elena E Zandany Anat A Saady Abed A Kinel-Tahan Yael Y Yehoshua Yaron Y Gedanken Aharon A

Bioresource technology reports 20200804

Today, the development of innovative methods for production of organic compounds from natural resources is essential topic for many research groups in the worldwide. Levulinic acid is a platform for many important organic processes in the synthesis of natural products, pharmaceuticals, plasticizers, drugs and various other additives. In addition, 1,4-pentanediol which is a product of reduction of levulinic acid, is a valuable raw material in the chemical industry. Here, we report a highly effici ...[more]

PMID: 32835182

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Project description:The current study deals with the biological response variations on some biochemical properties of the freshwater green algae Chlorella vulgaris by exposure to different Mg2+ concentrations (5, 10, and 15) mg/L. Physiological and biochemical parameters, including growth curve, doubling time, photosynthesis pigments, total protein and carbohydrates were investigated. Moreover, enzymatic parameters such as catalase (CAT), superoxide dismutase (SOD), and reactive oxygen species (ROS) were also examined. The maximum growth rate was 0.482/day during the 9th day with 5 mg/L Mg2+, while the minimum was 0.019/day during the 13th and 14th days with 10 mg/L Mg2+. Furthermore, doubling time ranged between 15.501 during the 13th day with 10 mg/L Mg2+, and 0.624 during the 9th day with 5 mg/L. The maximum value of chlorophyll-a was 0.157 μg/mL during the 1st day with 10 mg/L Mg2+, while the minimum was 0.062 μg/mL during the 14th day with 15 mg/L Mg2+. The carotenoid ranged between 0.029 μg/mL during the 7th day with 15 mg/L Mg2+ and 0.002 μg/mL during the 14th day. The maximum protein value was 9.620 μg/L during the 1st day with 15 mg/L Mg2+, while the minimum was 1.772 μg/L during the 14th day with 15 mg/L Mg2+. The carbohydrate showed a maximum value of 0.824 μg/mL during the 1st day with 10 mg/L Mg2+, while the minimum was 0.293 μg/mL during the 14th day with 15 mg/L. Moreover, SOD ranged between 0.884 unit/L during the 1st day with 15 mg/L Mg2+, and 0.073 unit/L as the minimum value during the 14th day with 15 mg/L Mg2+. The maximum value of ROS was 3.627 mM/mL during the 1st day with 5 and 15 mg/L Mg2+, while the minimum was 1.674 mM/mL during the 14th day with 10 mg/L. The results show that values of CAT ranged between 0.200 unit/mL during the 7th day with 10 mg/L Mg2+, and 0.010 unit/mL during the 14th day with 15 mg/L. Overall, 5 mg/L for biomass production and 15 mg/L for protein and carbohydrate production were optimum doses.

Dataset Information

An efficient method to produce 1,4-pentanediol from the biomass of the algae Chlorella ohadi with levulinic acid as intermediate.

Publications

An efficient method to produce 1,4-pentanediol from the biomass of the algae <i>Chlorella ohadi</i> with levulinic acid as intermediate.

Similar Datasets

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