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High variability in nutritional value and safety of commercially available Chlorella and Spirulina biomass indicates the need for smart production strategies
Wide differences in nutrition and safety of store-bought Chlorella and Spirulina suggest better production methods are needed
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Abstract
Chlorella contains 47% protein, comparable to Spirulina's 48% protein content.
- Protein quality and digestibility were lower in Chlorella than in Spirulina.
- Chlorella had an essential amino acid index of 1.1 compared to Spirulina's 1.3.
- Digestibility rates were 51% for Chlorella and 61% for Spirulina.
- Variability in nutritional quality was lower within production batches than between different batches.
- Some samples exceeded regulatory limits for polycyclic aromatic hydrocarbons, highlighting a need for ongoing monitoring.
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