Metabolomics and biochemical analyses revealed metabolites important for the antioxidant properties of purple glutinous rice.

Anthocyanins are often targets in polyphenol analysis. However, it's hard to effectively separate anthocyanin from copigments such as phenolic acid and flavanols due to their similar structure. Thus, a cation exchange chromatography with 001 × 7 has been developed, which is available for anthocyanins isolation both on a small and large scale. The optimal process condition of anthocyanins isolation was determined. Compared to the macroporous adsorbent resins and Strong Cation Exchange resin (SCX), 001X7 shows greater economic advantages in large-scale purification of anthocyanins. More than 95% purity of the anthocyanin fraction can be achieved through this approach. This method shows a path to provide large quantities of copigments-free anthocyanins from mulberry polyphenols for the further study of its biological effects and may be extended to other analytical methods of polyphenol isolation from other plant materials. 

https://doi.org/10.1016/j.crfs.2022.08.022

Recovery of value-added anthocyanins from mulberry by a cation exchange chromatography

Improve Anthocyanin and Zinc Concentration in Purple Rice by Nitrogen and Zinc Fertilizer Application

Metabolomics and transcriptomics provide insights into the molecular mechanisms of anthocyanin accumulation in the seed coat of differently colored mung bean (Vigna radiata L.).

:Thisworkusedthedyeextractedfromblackriceforthepreparationofecologicalandfunctional textiles,alsothedyeingpropertywasinvestigatedwithdifferentpH(2.0to8.0),dyeingtemperatures(50 °C to 90 °C ),anddyeconcentrations(1%to9%owf).Furthermore,thefunctionalitiesandtheadsorptionkineticsof blackriceextractonwoolwerealsoexplored.Theresultsrevealedthatthematerialhadexcellentdyeing propertiesat90 °C for60min,withadyeconcentrationof5%owf,apHof4.0,andthecolorfastnesswasrated above4.Theinhibitionratesof E. coli and S. aureus remainedabove85.09%and85.78%after10cyclesof accelerated laundering, and the percentage of DPPH scavenging rate was over 80 %.

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Qinquan Mao

Papers

How anthocyanin biosynthesis affects nutritional value and anti-inflammatory effect of black rice