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Sorbitan is produced through a dehydration process of sorbitol and this intermediate is esterified with a fatty acid. Depending on the degree of esterification, either Sorbitan Monostearate (SMS) or Sorbitan Tristearate (STS) is produced.

Sorbitan monostearate

GRINDSTED® SMS is Danisco's brand name for sorbitan monostearate (SMS).
Application areas for SMS
. In fine bakery  GRINDSTED® SMS improves the cake volume, while it increasinges the survival on re-hydration in the production of dry yeast. For non-food purposes, SMS has good anti-fog properties.
Product examples:

• GRINDSTED® SMS-M
• Sorbitan Tristearate

The sorbitan tristearate (STS) molecule is very large and resembles to some degree triglyceride, making it fat-soluble.
 
GRINDSTED® STS is Danisco's brand name for STS.

Application areas for STS

The primary functionality is linked to its ability to prevent re-crystallisation in for example cooking oil and reduce sandiness in margarine. Also related to re-crystallisation, STS acts as a very good anti-blooming agent in chocolate.
Product examples:

• GRINDSTED® STS 30 
• GRINDSTED® STS Q

Legal status varies from country to country. Local food regulations should always be consulted concerning the status of this product, as legislation regarding its use in food may vary from country to country.