I need a preservative in order to increase the shelf life of the product so that the product is stored in the refrigerator in plastic containers with tin and a plastic cover on the box with a different weight from 50 g to 900 g.
The shelf life is a month, and I need a substance to keep the product for more than 40 days without change.
After doing research on the substance and bacteria that cause damage, they are often Gram-positive, such as lactic acid bacteria,bacillus subtillis,
and gram negative diplococci like neisseria lactamica and gram negative cocci like Moraxella nonliquefaciens
the my product with rich carbohydrate and protein and with ph range 4.6 to 4.9
product like potato and chickpeas with tahina .
benzoate and sorbate used but not sufficient
Can you suggest names of materials you have to study and then get samples to try?
