Abstract: Disclosed are methods for decorticating and for hulling sunflower seeds with cryogenic liquid gases such as liquid nitrogen. The sunflower seeds are immersed in the liquid gas for up to an hour to allow for diffusion of the gas into the seeds. Thereafter, the infused sunflower seeds are immediately and rapidly heated such as by immersion into a water or hot oil bath. The gas vaporization and the severe thermal stress cause the hulls to split off the seed meats. The bath readily separates meats from hulls and seeds. Yields of hulled seeds can reach up to 60%. The process is useful for both confectionery and oilseed varieties of sunflower.

Abstract: Process for sealing phosphatized metal components to improve corrosion resistance and paint adhesion which involves coating said components with a zinc-containing sealant.