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Sorbitol, Rubus fruit, and misconception.

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  • 1United States Department of Agriculture, Agricultural Research Service, Horticultural Crops Research Unit Worksite, Parma, ID 83660, USA.

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Summary
This summary is machine-generated.

Rubus fruits like blackberries and raspberries contain very little sugar alcohol, despite common misconceptions. This review clarifies their actual sugar content and compares it to other fruits.

Keywords:
CarbohydratePolyolRosaceaeSugarSugar alcohol

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Area of Science:

  • Food Science
  • Nutritional Biochemistry
  • Agricultural Science

Background:

  • A widespread misconception exists that Rubus fruits (e.g., blackberries, raspberries) are high in sugar alcohol.
  • This misunderstanding has circulated without clear origin in the United States.
  • Previous research has not definitively addressed the sugar alcohol content in these fruits.

Purpose of the Study:

  • To clarify the actual sugar alcohol concentrations in Rubus fruits.
  • To summarize existing data on simple carbohydrate composition in Rosaceae and other fruits.
  • To provide a comparative analysis with non-Rosaceae fruits and processed foods containing sugar alcohol.

Main Methods:

  • Literature review of published research on fruit carbohydrate composition.
  • Analysis of reported sugar alcohol levels in various Rubus fruit samples.
  • Compilation of data on simple sugars and sugar alcohols across different fruit types.

Main Results:

  • Most ripe Rubus fruits contain negligible or zero detectable sugar alcohol.
  • Exceptions were noted in cloudberry (0.01 g/100 g), red raspberry (0.03 g/100 g), and one blackberry sample (4.8 g/100 g).
  • The high value in the single blackberry sample was identified as highly unusual, with most other blackberry samples showing no detectable sorbitol.

Conclusions:

  • Rubus fruits are generally low in sugar alcohol, contrary to popular belief.
  • This review consolidates evidence to correct misinformation regarding their sugar alcohol content.
  • Understanding fruit sugar composition is crucial for dietary guidance and food product development.