Resistant starch type 2 from lotus stem: Ultrasonic effect on physical and nutraceutical properties

Abstract

Highlights Resistant starch type 2 (RS) isolated from lotus stem. RS subjected to ultrasonication (US) at different power. US treatment improved the functional properties of RS. US increased anti-oxidant, bile acid binding and lipase inhibitory activity. In vitro glycemic index after ultrasonication however showed increasing trend.

Effect of Resistant Starch Sources on the Physical Properties of Dough and on the Eating Quality and Glycemic Index of Salted Noodles

“…The highest absorption was found with the addition of 20% Hylon VII, followed by HMT starch and GBF. This is possibly caused by the excessive number of hydroxyl groups present in the structure of resistant starch, which allow for more water connections through hydrogen bonding [ 22 ]. The indicators of dough strength, for example, the dough development time (DDT), breakdown time, stability, and peak time values, with higher values signify stronger dough.…”

Ultrasonics as a tool for development of pine-needle extract loaded bee wax edible packaging for value addition of Himalayan cheese

“…The DPPH scavenging ability of samples, E C , E C1 , E C2 , and E C3 , was evaluated to know the change in the antioxidant potential of the coating with different concentrations of PNE. The assay was conducted based on the method of Noor, et al [14] . The radical scavenging activity was calculated using the formula, …”

Effect of Nanoreduction on Functional and Structural Properties of Resistant-Starch from Lotus Stem

“…It is neither absorbed nor digested in the small intestine and gradually reaches the colon where it is fermented by the intestinal microbiota producing short chain fatty acids . It can be regarded as a source of dietary fiber and is categorized into five types including RS type I (starch which is trapped within the grains or whole or partly milled seeds and is inaccessible to enzymes), RS type II (ungelatinized native granular starch with resistance to hydrolysis due to B- or C-polymorph crystallinity), RS type III (retrograded starch), RS type IV (which is resistant to enzymatic digestion owing to chemical modification via substitution, cross-linking, and conversion) and RS type V (starch which forms an amylose–lipid complex) . RS serves many health promoting functions such as reduction of risks associated with colon cancer, pancreatic cancer, and cardiovascular diseases, regulation of postprandial blood glucose, alleviation of type 2 diabetes, acts as prebiotic for gut microflora, and reduces inflammation and oxidative stress .…”

“…As the commercial development of RS is hindered by the limitation of raw material and singleness of preparation technology, so in the current study, the method of extracting RS from lotus stem ( Nelumbo nucifera) was standardized. Lotus is an important freshwater aquatic plant, crediting 70% of the plant’s dry weight to starch . Lotus rhizome, seeds, leaves, flowers, buds, and steam have been used in traditional Asian medicines to treat ailments such as hypertension, heart problems, depression, cancer, vomiting, insomnia, and diarrhea …”

“…Lotus is an important freshwater aquatic plant, crediting 70% of the plant’s dry weight to starch . Lotus rhizome, seeds, leaves, flowers, buds, and steam have been used in traditional Asian medicines to treat ailments such as hypertension, heart problems, depression, cancer, vomiting, insomnia, and diarrhea …”