The effect of ball-milling on physicochemical properties of maize starch was evaluated. Results found that the cold water solubility (CWS) of maize starch was positively correlated with the time of milling up to 3 h. There was no significant influence of using a ceramic pot versus a stainless steel pot on CWS. However, following 5 h of ball-milling CWS increased quite dramatically in the cerami...

Kernel starch content is an important trait in maize (Zea mays L.) as it accounts for 65-75% of the dry kernel weight and positively correlates with seed yield. A number of starch synthesis-related genes have been identified in maize in recent years. However, many loci underlying variation in starch content among maize inbred lines still remain to be identified. The current study is a genome-wi...

Considering the renewability and chemical versatility of natural biopolymers, innovative solvation processes to efficiently disrupt native supramolecular structures (namely dissolve/gelate) polymers for their modification, derivation, materials fabrication are highly demanded. This work compares structural disorganization behavior at room temperature among waxy maize, high-amylose cassava potat...

We examined pollen grains and starch granules from a large number of modern populations of teosinte (wild Zea spp.), maize (Zea mays L.), and closely related grasses in the genus Tripsacum to assess their strengths and weaknesses in studying the origins and early dispersals of maize in its Mesoamerican cradle of origin. We report new diagnostic criteria and question the accuracy of others used ...

We enzymatically modified rice starch to produce highly branched amylopectin and amylose and analyzed the resulting structural changes. To prepare the highly branched amylopectin cluster (HBAPC), we first treated waxy rice starch with Thermus scotoductus alpha-glucanotransferase (TSalphaGT), followed by treatment with Bacillus stearothermophilus maltogenic amylase (BSMA). Highly branched amylos...

O comportamento reológico de dispersões com alto teor de sólidos, de misturas de amido de milho ceroso hidrolisado (HWS), em presença do concentrado de proteínas do soro do leite (WPC) e uréia, foi estudado por medidas oscilatórias de pequena amplitude no regime linear, sob aquecimento a 80 oC e resfriamento a 25 oC, a pH 7,5. A amostra de HWS não-gelificante foi obtida por sonicação de amido d...

Abstract In this study, we investigated the physiological responses of maize with different amylose content at seedlings to drought stress. For waxy (WMS) and normal (NMS), decline photosynthesis under stress (DS) was due stomatal limitation. DS increased non-photochemical quenching coefficient (NPQ), whereas decreased activities peroxidase (POD) plant height (PH), compared plants irrigation. T...