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I am one small manufacturer of tomato sauce and dates sauce . And my question is regarding preservative i.e we make tomato sauce and paking it in plastic bag after few day this paket size increasing and produce gas in plastic bag ,so I want to know about proper method of manufacturing . Our preservatives are sodium benzoate, acitic acid and suger.

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    You need to use a method approved by your country's food safety regulations.
    – user141592
    Dec 20, 2020 at 10:41
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    And you do realize that a bloated package means that you have a spoiled product that must be discarded, right?
    – Stephie
    Dec 20, 2020 at 11:04
  • Are you refrigerating the bags of sauce? Regardless of what preservatives you use, I don't see how your bagged product could possibly be shelf stable.
    – csk
    Dec 20, 2020 at 20:10
  • @csk : "tomato sauce" means different things by country. I assume by the name he's Indian, which would be British English, and so what the Americans call Ketchup. So there'd also be vinegar, salt, and reduced moisture.
    – Joe
    Dec 20, 2020 at 23:43
  • @Joe That's fair. Still, I'm concerned by the idea of home-packaging a sauce in plastic bags. And if it's not home-packaged, but rather packaged using similar equipment to what ketchup factories use, I think that would be off topic for this site.
    – csk
    Dec 21, 2020 at 0:02

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