The Features of Glucoamylase (GA) Modification

GAs (1,4-α-D-glucan glucohydrolase, EC 3.2.1.3) have poor specificity and can react with many substrates, which not only cuts the α -1,4-glycosidic bond from the non-reducing end of starch molecules but also the α -1,6-glycosidic bond. Glucoamylase also hydrolyzes dextrin, maltose, glycogen, etc. The majority of glucoamylases are multidomain enzymes consisting of a catalytic domain connected to a starch-binding domain by an O-glycosylated linker region. Glucoamylase is a single-chain acid glycohydrolase that can hydrolyze starch into glucose, with a hydrolysis ratio of 99.9% and is usually used as a glycemic agent for starch. Glucoamylase-treated starch increases water-holding capacity or heat-resistant behavior, minimizes syneresis, and improves thickening.

Fig.1 Mode action of the glucoamylase modification. (CD BioGlyco)

Glucoamylase Treatment Services at CD BioGlyco

At CD BioGlyco, we provide high-purity and high conversion rate glucoamylase-treated starch manufacturing service and modification starch detection service.

• Modified starch manufacture service

CD BioGlyco is equipped with advanced industrial-scale modified starch manufacturing equipment. Our production process can be optimized by adjusting various parameters, including pH, temperature, buffer system, etc., to produce high-purity starch. The reaction process is adjusted according to the demand, and the arts are constantly optimized to ensure the maximum output.

• Modification of starch detection service

We have professional researchers and advanced testing instruments for the index determination of modified starch indicators. Thus, we provide multi-faceted comprehensive analytical services for customers. The analytical services we offer are as follows:

• Customized modified starch services

In the preparation process of starch modification, the liquefaction and saccharification process of different cereal starches with glucoamylase are not the same. Our process is performed at a suitable temperature to avoid deterring bacterial growth. Our company customizes the optimal reaction process according to the customer's needs.

Fig.2 Process of starch glucoamylase method modification. (CD BioGlyco)

Applications

• Glucoamylase-treated starch can be used in the production process of monosodium glutamate and citric acid.
• In the production of liquor, yellow rice wine, qu wine, and other alcohol, glucoamylase-treated starch products instead of qu,  which improves the flavor of the wine and shortens the fermentation time.
• Glucoamylase-treated starch can be applied in the vinegar industry.

CD BioGlyco is a leading global Carbohydrate Manufacturing company, that offers you a full range of Starch Manufacturing service. Our manufacturing equipment can meet any of your manufacturing requirements from laboratory scale to industrial scale. Moreover, we provide high-quality Native Starch Manufacture and Modified Starch Manufacture services. If you are interested in our services, please feel free to contact us.

• α-Glucosidases Treatment
• β-Amylases Treatment