Xanthan gum is a fermented polysaccharide used as a thickener and stabilizer. Although technically a carbohydrate, it is used in extremely small amounts and contributes negligible net carbs, making it a staple in low-carb, keto, and diabetic-friendly cooking.

Quick Carb Snapshot

  • Carbs (per 100 g): ~78 g (mostly fiber)
  • Carbs (standard portion): ~0 g net per ¼ tsp
  • Glycemic Index: Very low
  • Similar Low-Carb Options: Guar gum, psyllium husk powder
  • Blood Sugar Impact: Lower
  • Keto-Friendly? Yes

Key Traits

  • Texture: Fine powder
  • Flavor: Neutral
  • Carb Impact: Negligible net carbs
  • GI / GL Notes: Fiber-based thickener
  • Common Uses: Sauces, gluten-free baking

Best For

  • Low-carb and keto baking
  • Thickening sauces
  • Replacing gluten structure

Avoid For

  • Overuse (slimy texture)
  • Sensitive digestion (large amounts)
  • Substitution without adjustment

Why Choose Xanthan Gum for Low-Carb Eating

Texture & Structure

  • Provides viscosity without starch
  • Works at very low doses
  • Replaces gluten elasticity

Flavor & Nutrition

  • No sweetness
  • Negligible calories
  • No blood sugar spike

Storage & Shelf Life

Pantry

Store airtight away from moisture.

Cooked

Prepared foods keep normally.

Signs It Has Gone Bad

  • Clumping from moisture
  • Off odor
  • Contamination

Allergy & Dietary Flags

  • Gluten-Free: Yes
  • Nuts: No
  • Nightshade: No
  • Vegan / Vegetarian: Yes

Often paired with guar gum and psyllium husk powder, xanthan gum
is a core low-carb thickener.

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