Abstract: Acetylsalicylates with basic amino acids such as DL-lysine is stabilized in the form of solid preparation by admixing anhydrous calcium chloride therewith. The preparation containing calcium chloride is prevented from hydrolysis and can be stored for a long period of time even at a relatively high room temperature. The preparation is further prevented from discarolation when glycine is added thereto.

Abstract: A powdered fiber bundle of bamboo shoot which is capable of swelling with water is produced by heating bamboo shoot with heated steam at a pressure of 3 to 8 kg/cm.sup.2 (gauge) at a temperature of 130.degree. to 180.degree. C., releasing the pressure at once, drying and pulverizing the squirting bamboo shoot and collecting fine powders. The powdered fiber bundle which has been washed with water sufficiently until it loses any taste and odor is useful as a food additive for supplementing fibrous material to foods deficient in vegetable fiber content.

Abstract: A powder of expanded asparagus fiber bundles is obtained by keeping the integument of asparagus stems under a pressure of 2 to 8 kg/cm.sup.2 (gage), then releasing the pressure in a moment, drying the spurted material, and pulverizing the dried material. This powder is used as a food additive for supplementing fibrous material to a diet deficient in vegetable fiber content and is effective in preventing acquired intestinal diverticulum.