Biochemical analyses of sugary-1 mutants indicate that both types of starch debranching enzymes, isoamylase and pullulanase, are either missing or greatly reduced in the endosperms of maize (Pan and Nelson, 1984; Rahman et al., 1998) and rice (Nakamura et al., 1992, 1996b, 1997, and the present study).he present investigation has been carried out to examine the relationship between the activities of starch debranching enzymes and the alteration of amylopectin structure in various sugary-1 endosperms of rice by partitioning the endosperm into the starch region and the phytoglycogen region.
Glass syringes are the most common type of syringe used with a syringe pump. Glass syringes are typically compatible with most applications, reusable for multiple applications, and more accurate than most syringe types. The plunger of a glass syringe can be made of only ground glass, glass with a Teflon syringe tip type, metal-only, or metal with a Teflon tip.
Pen Needles. Insulin pen needles and syringes are the most commonly used device by diabetics for injecting insulin. Although injecting with the use of syringe is still the most predominant method, more people are seeing the benefits of using insulin pen device and diabetic pen needles. Insulin pens came out in mid 1980s when the only method known is through syringe injection.