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Raisins (Dried Grapes) Safety Inspection

Detect artificial coating, dye treatment, and adulteration in raisins

Inspection Guide

Raisin Chemical Treatment Detection

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Raisin Chemical Treatment Detection

Raisins are treated with chemicals for appearance enhancement and preservation. 1. The Water Soak Test: Soak a handful of raisins in water for 30 minutes. Natural raisins will swell and release minimal color (slight brown tint is normal). If the water turns: - Bright/intense color - Artificial looking shades - Heavy color bleeding It indicates artificial dye treatment. 2. The Rub Test with White Cloth: Rub raisins vigorously with a wet white cloth. Natural raisins leave minimal residue. If you see: - Color transfer to cloth - Oily/waxy residue - Glossy coating coming off It indicates chemical treatment or coating. 3. The Shine Comparison (Under Light): Natural raisins have a matte finish with deep wrinkles. Hold under bright light. Artificially treated raisins show: - Unnatural glossy shine - Reflective surface - Lack of deep wrinkles (smoothed by coating) - Wet appearance 4. The Wrinkle Depth Indicator: Natural dried raisins have deep folds and wrinkles from natural drying process. Chemical-coated raisins have: - Smooth surface lacking wrinkles - Shallow wrinkles filled with coating - Plump appearance (inflated with water/chemicals) 5. The Texture & Stickiness Test: Natural raisins may stick together slightly from natural sugars. Excessively sticky or conversely too loose/separate raisins indicate: - Glycerine or oil coating (sticky) - Chemical anti-caking agents (too loose)

Quick Safety Tips

  • Natural raisins have matte finish with deep wrinkles
  • Water soak test for dye detection
  • Wet cloth rub for coating detection
  • Wash thoroughly before consumption

Chemical Concerns

Artificial shine/coating Sulfur dioxide Chemical dyes Glycerine coating Oil treatment

Step 1: AI Visual Scan