Nostoc Sphaericum Exopolysaccharide Extraction and Functional Characterization

71.63% dw carbohydrate content was the highest recorded for Nostoc sphaericum development in March. Juan Rodolfo Omote-Sibina collected samples from Laguna Chica lake in Catac, Peru, between September 2023 and July 2024, optimizing extraction parameters to yield a product with 93.79% carbohydrates. The study provides a physicochemical and functional baseline for the biopolymer, including FTIR, TGA, and DSC analyses.

Use Cases

• Optimizing biopolymer extraction processes based on water/sample ratio, temperature, and time parameters.
• Analyzing the functional properties of polysaccharides based on hydration, emulsification, foaming, and gelation data.
• Modeling the influence of environmental conditions on cyanobacterial development and carbohydrate content.
• Characterizing the thermal stability of extracted biopolymers based on thermogravimetric (TGA) and calorimetric (DSC) analyses.

Strengths

• Specific optimal extraction parameters are provided: water/sample ratio of 179.9:1, temperature of 88.6°C, and time of 190.6 min.
• Quantified carbohydrate content results: 71.63% dw in March sample and 93.79% dw in the extracted product.
• Functional properties related to hydration, emulsification, foaming, and gelation were evaluated.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset is small at 77.9 KB, indicating limited scope.

Provenance

Source

figshare

Collection Method

Samples were collected from Laguna Chica lake and analyzed using response surface methodology.

Time Range

September 2023 to July 2024

Freshness

Last updated 2026-05-13 04:43:29; freshness should be verified.

Geography

Laguna Chica lake, Catac, Ancash, Peru