Starch isolation from turmeric dye extraction residue and its application in active film production was written by Maniglia, Bianca Chieregato;Silveira, Thamiris Maria Garcia;Tapia-Blacido, Delia Rita. And the article was included in International Journal of Biological Macromolecules in 2022.HPLC of Formula: 33171-05-0 The following contents are mentioned in the article:
In this study, we have isolated starch from turmeric dye extraction residue by steeping in acid medium (AS), steeping in water (WS), or steeping in alk. medium (KS) and assessed the filmogenic capacity of the resulting starches. We have also characterized the chem. composition, morphol., swelling power, solubility, crystallinity, and active properties of the AS, WS, and KS starches and investigated the mech., functional, antioxidant, and antimicrobial properties of the corresponding films. The AS and KS starches showed lower apparent amylose content and higher purity, relative crystallinity, swelling power, and solubility than the WS starch. All the starches retained phenolic compounds and curcuminoids; their phenolic and curcuminoid contents were higher than the contents in the residue, especially in the case of the AS starch, which yielded films with the best antioxidant and antimicrobial activities. The AS and KS starches yielded films that were more resistant at break, less soluble in water, and less hydrophilic than the film obtained from the WS starch. Thus, submitting turmeric dye extraction residue to AS in ascorbic acid yielded a starch that resulted in films with good mech. properties and better antioxidant and antimicrobial properties, to ensure safe and prolonged food shelf life. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0HPLC of Formula: 33171-05-0).
Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.HPLC of Formula: 33171-05-0
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem