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May 29, 2026Journal of the Chilean Chemical SocietyOpen Access

METHODOLOGICAL SCOPE OF STANDARD NCH0765 FOR THE DETERMINATION OF TOTAL IMPURITIES BY WASHING IN ALGAE OF THE GENUS Gracilaria

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Authors

MAMichael ArayaUniversidad Católica del NorteFTFadia TalaUniversidad Católica del Norte

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Implication

Randomized trial analyzes impurity levels in Gracilaria using two methodologies, indicating significant discrepancies.

Key Points

  • This research aims to assess the differences in impurity determination methods for Gracilaria algae.
  • Analyzed impurity levels using two methods: washing and sieving/manual separation.
  • Determined the impurity percentage for each method on the same sample.
  • Examined the impact of organic compound exudation during washing on impurity values.
  • Washing methodology detected 31.9 ± 2.9% impurities compared to 2.4 ± 0.9% by sieving/manual separation (p<0.05).
  • The exudation of Agar during washing could lose up to 20% of total impurities seen.
  • Differences in impurity detection could affect export regulations for Gracilaria resources.

Cite This Study

Araya et al. (2025) studied this question.

synapsesocial.com/papers/6a192df7fab5b468c4416ebehttps://doi.org/10.4067/s0717-97072025000306431
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