54 results about "Delphinidin" patented technology

This invention provides a prophylactic and therapeutic agent for dry eye, having new ingredients to reduce the deterioration of the lacrimal secretory ability and to inhibit the generation of radical oxygen in lacrimal gland tissue. The prophylactic and therapeutic agent for dry eye of this invention contains the maqui berry extract as the active substance of this invention, i.e. containing delphinidin glycoside extracted from the maqui berry and at least one or more of the active substances delphinidin-3-sambubioside-5-glucoside, delphinidin-3,5-diglucoside, delphinidin-3-sambubioside and delphinidin-3-glucoside, preferably delphinidin-3,5-diglucoside.

Disclosed is a rose characterized by containing a flavone and a delphinidin by a genetic recombination technique. Typically, the flavone and the delphinidin are produced by the expression of a flavonesynthesis enzyme gene and a flavonoid 3',5'-hydroxylase gene, respectively, both introduced into the rose. The flavone synthesis enzyme gene may be one originated from a plant belonging to the familyScrophulariaceae, such as one originated from common snapdragon (Scrophulariaceae, Antirrhinum majus) and one originated from torenia (Scrophulariaceae, Torenia hybrida). The flavonoid 3',5'-hydroxylase gene may be one originated from pansy (Viola x wittrockiana).

The invention discloses a method for separating and preparing five high-purity anthocyanidin monomers from grape skins, relating to the preparation of natural pigments and belonging to the fields of food safety and food analytic chemistry. The method comprises the following steps of: firstly, carrying out anthocyanidin digestion on carbernet sauvignon grape skins to obtain crude extractive of anthocyanidin; then purifying the crude extractive by using XAD-7HP macroporous resin, and removing most of moisture absorption components such as saccharides, inorganic salts, phlegmatic temperament and the like in the crude extractive; and carrying out preparative liquid phase separation on the extractive of anthocyanidin subjected to the preliminary purification to obtain the high-purity monomers of the anthocyanidin. The method has the advantages of only using alcohol and acid as a solvent in stages of extraction, purification and separation in the preparation of the anthocyanidin and being environment-friendly, simple, convenient and feasible. The five anthocyanidin monomers obtained after purification are respectively delphinidin glucoside, 3'-methyl delphinidin glucoside, dimethyl delphinidin glucoside, dimethyl delphinidin acetylation glucoside, and dimethyl delphinidin trans-tonka-bean acetylation glucoside, the purities of which are sequentially 99.9%, 99.9%, 99.9%, 99.9%, 91.7%, 95.5%.

The invention belongs to the field of plant cultivation, and particularly relates to a method special for increasing the content of anthocyanin in roselle. In order to increasing the content of the anthocyanin in the roselle, a composition is supplied for the glucoside synthesizing process of delphinidin and cyaniding in the roselle, all the components in the composition serve as precursors and intermediate products which are necessary in biosynthesis of the roselle anthocyanin, and through continuous exploration and improvement, the best using time and applying method of the composition are determined. It is determined that the content of the anthocyanin in roselle calyxes can be increased by multiple times through the method, and the content of the anthocyanin in the calyxes is 121%-293% of that of a control group; in addition, no pollution is generated to the environment, and higher-quality raw materials can be supplied to anthocyanin processing industry through the method.

The present invention relates to the application of delphinidin or its salts, and the delphinidin or its salts are aimed at the following bacteria: Staphylococcus aureus showing resistance to antibiotics and aureus showing low sensitivity to antibiotics Staphylococcus aureus, and can at least partially neutralize said bacteria. In addition, the present invention also relates to a method of treating individuals with delphinidin or its salts.