Food | Moisture content % | Water Activity | Degree of protection required |
Fresh meat Bread Marmalade | 70 40 35 | 0.985 0.96 0.86 | Package to prevent moisture Loss |
Rice Wheat flour Raisins Macaroni Marzipan Oats Nuts | 15 - 17 14.5 27 10 15 - 17 10 18 | 0.80 0.72 0.60 0.45 0.75 0.65 0.65 | Minimum protection or no packaging required |
Toffee Boiled sweets Biscuits Milk Potato crisps Spices Dried vegetables Breakfast cereal | 8 3.0 5.0 3.5 1.5 5 - 8 5 5 | 0.60 0.30 0.20 0.11 0.08 0.50 0.20 0.20 | Packaged to prevent moisture dried uptake |