1 / 7

Sulpher Dioxide in Foods

Sulpher Dioxide in Foods. ■ Sulfuring: The process by which sulfite is applied to food. The sulfite in diet occurs mainly as food preservative. Sulpher Dioxide in Foods. ■ Application of Sulfuring in food industry: As antimicrobial agents. To preserve colors of various products.

belle
Download Presentation

Sulpher Dioxide in Foods

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Sulpher Dioxide in Foods ■ Sulfuring: The process by which sulfite is applied to food. • The sulfite in diet occurs mainly as food preservative.

  2. Sulpher Dioxide in Foods ■ Application of Sulfuring in food industry: • As antimicrobial agents. • To preserve colors of various products. • Preserve dried fruits.

  3. Sulpher Dioxide in Foods ■ The source of sulfite additives include: 1. ► Na2S2O5 ► CaH2O6S2 ► KHSO3 ► NH4 bisulfite. 2. Exposure to fumes of burning sulfer.

  4. Sulpher Dioxide in Foods ■ Preservative Toxicity: • Preservative reacts with sulfydryl groups, aldehyde, ketone, enzyme bound NAD-FAD. • Preservative reacts with thiamine in food • People suffering asthma cannot tolerate sulfite

  5. *Principle NaOHI2+H2SO4 SO2S2O3 Blue starch

  6. 60 5 55 10 50 45 15 40 20 35 25 30 Starch 15 min 0.002N Iodine sol. 10 ml (1:3) H2SO4 25 ml 0.1N NaOH 50 ml grape juice Occasional Shaking

  7. * Calculations 1L (1 N) of 2eq I = Mwt of SO2 1 L (1N) of 2eq = 64 g of SO2 1ml (0.002N) I = 64 1000 X 500 X 2 1ml (0.002N) I = 0.000064 g of SO2 No. of gm of SO2 present in sample = X ml x 0.000064 1 G% of sulpher dioxide in grape juice = X ml x 0.000064 x 100 50 Samar A. Damiati

More Related