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Sugarcane Straw Hemicellulose Extraction by Autohydrolysis for Cosmetic Applications.

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Optimized hydrothermal extraction of sugarcane straw yields hemicellulose and xylooligosaccharides (XOS) with potent antioxidant and anti-aging properties for cosmetic applications.

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Area of Science:

  • Agricultural Science
  • Biochemistry
  • Materials Science

Background:

  • Sugarcane cultivation produces abundant by-products, such as straw, which are often underutilized.
  • Hemicellulose and its derivatives, like xylooligosaccharides (XOS), possess valuable functional properties.
  • Exploring sustainable sources for bioactive compounds is crucial for various industries.

Purpose of the Study:

  • To optimize the hydrothermal extraction of hemicellulose from sugarcane straw.
  • To characterize the functional properties of the extracted hemicellulose and XOS.
  • To evaluate the potential of these extracts for cosmetic applications.

Main Methods:

  • Response-surface methodology with a two-factor composite design was employed for optimization.
  • Key parameters optimized included solid/liquid ratio, temperature, and extraction time.
  • Characterization involved assessing chemical composition, molecular weight, antioxidant, and antimicrobial potential, as well as enzyme inhibition.

Main Results:

  • Optimized extraction yielded 24.46 g/100 g of straw, with a hemicellulose polymerization degree of 17.40.
  • Both hemicellulose (73% antioxidant effect) and XOS (85% antioxidant effect) showed significant antioxidant activity.
  • Hemicellulose inhibited elastase (>50%), and both extracts inhibited collagenase (MMP1) comparably to a positive control.

Conclusions:

  • Optimized hydrothermal extraction effectively produces hemicellulose and XOS from sugarcane straw.
  • The extracts exhibit promising antioxidant, anti-aging (collagenase inhibition), and potential preservative properties.
  • These findings support the use of sugarcane straw-derived extracts in cosmetic formulations.