Study on the Edible Value and Antioxidant Activity of the Flowers of Dendrobium chrysotoxum
Objective:To clarify the components,antioxidant activity,and food safety of the flowers of Dendrobium chrysotoxum,and promote their development and utilization.Method:The flowers of D.chrysotoxum dried at 50℃were taken as the research object.According to relevant national standards or third-party testing institutions commissioned,their nutritional components,active ingredients,and safety indicators were tested.The antioxidant capacity was tested using a reagent kit.Result:The f lowers of D.chrysotoxum contain multiple functional compounds,with a polysaccharide content of up to(25.25±1.36)g/100 g and a soluble sugar content of(52.09±1.47)g/100 g;the alcohol extract of the flowers of D.chrysotoxum has the ability to scavenge hydroxyl radicals,superoxide anions,ABTS cation radicals,and DPPH radicals,with half inhibitory concentrations(IC50)of 0.054 4 mg·mL-1,0.095 9 mg·mL-1,0.005 4 mg·mL-1,and 0.002 5 mg·mL-1,respectively;the 4 heavy metals,196 pesticide residues,and 2 microorganisms in flowers of D.chrysotoxum did not exceed the standard.Conclusion:The f lowers of D.chrysotoxum has high nutritional value and health functions,and can be developed and utilized as an edible flower.
flowers of Dendrobium chrysotoxumnutritional compositionantioxidant capacityedible safety
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