The Preparation,properties And Application Of Starch Sodium Octenyl Succinate

Octenyl succinic anhydride modified starch (SSOS) was prepared from non-crystal granular corn starch and waxy corn starch in this paper, then respectively dealed them withα-amylase or hot temperatuter, moreover using the products to prepare for different kinds of microcapsule.finally the embedding mechanism and reaction mechanisms were preliminarily studied.Including following several sections.The process of preparing Non-crystal corn SSOS was:Non-crystal granular starch was prepared in ethanol-water system, low viscosity non-crystal granular SSOS was produced through enzymolysis and the properties of adsorption was very well, the maximal oil adsoption exceeded 161%,which was treble the adsorption of native SSOS,the optimum processcondition was: reactive temperature 35℃,pH8.5, reactive time 2h, the concentration of starch 0.25g/ml, the DS 0.0166..The process of preparing waxy corn SSOS was: SSOS was prepared from waxy corn starch, then dealing it with pyrolysis and microcapsule, the embedding property of the product was very well, the rate of embedding oil exceeding 98%. Compared with home products, the surface oil was reduced 71%.The optimize condition was: the last temperature 165℃, reactive time 5h. The optimum technology of microcapsule was: the rate of the modified starch and oil 2:1, homogeneous pressure 30-40Mpa, homogeneous times 2-3, entering air temp 210℃, leaving air temp 80℃,nozzle cleaner 10 times/min.The process of preparing SSOS including: SSOS was dealed with thermostable alphaα-amylase, taking apparent viscosity as index to decide the degree. The embedding property of product was not very well, the rate of embedding oil was 90.3%. The optimum condition was : the concentration of starch 20% (w/w), reactive temperature 95℃, pH 6.0, amylase added 10ml.Hydroxypropyl modified SSOS was prepared from waxy corn starch, then dealing it with pyrolysis and microcapsule, the embedding property of the product is very well, themaximun rate of embedding oil 99.2%, the rudction of the surface oil was 33.6%. The preparing technics: the concentration of starch 35%, epoxy chloropropane addition 10%( dry basis of esterification), at 18℃reactive time half an hour, at 50℃reactive time 10h.Non-crystal granular SSOS was hydrophilic, after modification, the abilty of oil obsorption was improved largely. Waxy corn starch is suit to prepare microcapsule, which could reduce the harm of food additive and prolong the shelf life of functional components of health product, such as DHA and AA oil.