Absorbable Surgical Sutures Catgut Sutures-Plain Stargut, a natural absorbable suture is obtained by longitudinally slitting the intestinal submucosa of sheep and goat,twisting the ribbons and joining them in wet condition giving monofilament finish. Monofilament For smooth tissue passage.Smooth tie down and knot security Tissue Reaction Moderate. Plain catgut enjoys lower tissue reaction as compared to chromicised Absorbable By enzymatic digestion. Complete by 90 days.