Nutritional Profile and Health Properties of Turmeric and Curcumin Extract: a Comparative Analysis
Keywords:
Antioxidant potential, bioactive compounds, nutritional quality, white grape pomaceAbstract
Turmeric has been used as a traditional medicine in Southeast Asian countries and can serve as a spice, food preservative, and coloring agent. Turmeric owes its unique properties and color to curcuminoids, biologically active substances that encompass curcumin, de-methoxycurcumin, and bis-demethoxycurcumin. The purpose of the study was to investigate the nutritional properties of turmeric and curcumin extract, as potential dietary supplements for poultry nutrition. Turmeric was characterized by a content of 7.89 % crude protein, 4.61 % crude fiber, 1.76 % crude fat, and 7.47 % ash. The proximate composition of curcumin extract showed lower values when compared to turmeric. The chromatographic analysis of vitamin E isomers revealed α-tocopherol of 1.97 mg/kg in turmeric vs 8.09 mg/kg in curcumin, γ-tocopherol of 3.01 mg/kg in turmeric vs 10.4 mg/kg in curcumin, and δ-tocopherol of 13.84 mg/kg, while in curcumin was not detected. The antioxidant yellow pigments lutein and zeaxanthin were in higher amounts in curcumin extract, which was also characterized by an increased concentration of total polyphenols (76.50 mg/g GAE). Turmeric had higher levels of flavonoids (47.42 mg/g vs 24.71 mg/g). The outcomes of this study can serve as a foundation for developing innovative food products by using poultry nutrition and harnessing the potential benefits of this ancient spice.
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