Utilization of sodium hypochlorite and sodium hydroxide as solvent in polyhydroxybutyrate isolation from Spirulina platensis as vegetable capsule shells material

The majority of capsule shells until 2014 are still made from gelatin from pork skin and bones. To overcome this problem, research on vegetable capsule shells began to develop based on seaweed extracts such as carrageenan, alginate, HPMC, and pectin. Existing vegetable capsule shells need to be upgr...

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Bibliographic Details
Main Authors: Dianursanti, Alifia, Kanya C. H., Sari, Putri R.
Format: Conference Proceeding
Language:English
Subjects:
Algae
Alginates
Bones
Carrageenan
Caustic soda
Cyanobacteria
Disruption
Gelatin
Mathematical analysis
Pectin
Polyhydroxybutyrate
Pork
Seaweeds
Sodium
Sodium hydroxide
Sodium hypochlorite
Solvents
Vegetables
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Summary:The majority of capsule shells until 2014 are still made from gelatin from pork skin and bones. To overcome this problem, research on vegetable capsule shells began to develop based on seaweed extracts such as carrageenan, alginate, HPMC, and pectin. Existing vegetable capsule shells need to be upgraded to be more robust with the addition of polyhydroxybutyrate (PHB). Spirulina platensis microalgae is a PHB producer that is easy to cultivate, its production can be optimized by modifying the isolation method. Chemical disruption is the most simple and economical cell disruption method. It is followed with isolation steps of PHB precipitation and PHB purification. Sodium hypochlorite (NaClO) is a cell-disrupting solvent that is widely used for isolation of PHB from microalgae while sodium hydroxide (NaOH) has been used to isolate PHB from bacteria. The independent parameter tested in this study is the ratio of NaClO and NaOH used for cell disruption solvent ranging from 100:0, 85:15, and 75:25. The PHB quantification method used was FTIR, while for characterization is by calculating the PHB mass and extraction yield. The expected results of this PHB extraction is to get maximum yield of PHB and the most efficient extraction method based on the cell disruption solvent composition. Extraction of microalgae sample with 100:0 ratio of NaClO:NaOH is expected to have the highest yield of PHB compared to other variations.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0015250