Research Progress of Natural Edible Blue Pigment

Abstract

Natural edible blue pigment is a scarce pigment among natural pigments, mainly derived from animal and plant tissues, microbial fermentation metabolites. Among the plant natural blue pigments, the ones that account for the widest market of edible natural blue pigments are algal blue pigment and gardenia blue pigment. The sources of microbial natural blue pigment include some fungi and bacteria in addition to microalgae, mainly focusing on the study of Streptomyces, Pseudomonas, Pseudoalteromonas, purple non-sulfur bacteria, Dourollerella, and sprouting short-stalked mold. The natural blue pigment is unstable, so it is of far-reaching significance to improve the extraction process, especially the research on the isolation and purification of blue pigment produced by microbial fermentation. High-speed frozen centrifugation, solid-phase extraction, high performance liquid chromatography, nuclear magnetic resonance spectroscopy, mass spectrometry and other methods are commonly used for the separation and purification of natural blue pigments and analytical identification. Some natural blue pigments have antioxidant, antitumor, hypolipidemic, hypoglycemic, anti-inflammatory, anti-cancer, immunomodulatory activities, etc. There will be a broad development prospect for the future research of natural blue pigments.

Discrimination of Different Part of Curcuma longa by HPLC Fingerprints Combined with Multivariate Statistical Analysis

“…[2][3][4] Rhizome are also widely used in industrial dyes, food additives, and health care products. 5,6 The tuberous root of Curcuma longa are used in activating blood and stopping energy, relieving depression, dredging the liver and benefiting the gall. 7,8 bisdemethoxycurcumin Curcumin, demethoxycurcumin and are the main active components of them.…”