1 Food preservatives; food preservatives, namely, preservatives for the preservation of natural food and processed food; food preservatives, namely, silk protein for the preservation of natural food and processed food; food preservatives, namely, silk protein for the preservation of produce, seafood, meat, poultry, cough drops, hard candy, candy bars, crackers, breads, grains, cookies, snack foods, cheese, and nuts; food preservatives, namely, preservatives for the preservation of preharvest fruits and vegetables; food preservatives, namely, silk protein for the preservation of preharvest fruits and vegetables; food preservative compositions; food preservative compositions, namely, preservative compositions for the preservation of natural food and processed food; food preservative compositions, namely, silk protein compositions for the preservation of natural food and processed food; food preservative compositions, namely, silk protein compositions for the preservation of produce, seafood, meat, poultry, cough drops, hard candy, candy bars, crackers, breads, grains, cookies, snack foods, cheese, and nuts