Table 3. Accuracy of vitamin K analysis using enzymatic extraction coupled with HPLC-FLD

Analytes	Sample	Certified value1) (μg/100 g)	Analytical value2) (μg/100 g)	Recovery3) (%)	Recovery limit4) (%)
Phylloquinone	SRM 1849a5)	106±17	94.15±3.85	88.8	75-120

The certificated value for the contents of corresponding analytesin SRM provided by NIST.
The analytical value obtained in this study.
Recovery (%) = 100 × (Analysis value / Certificated value).
Recovery limits: 75-120% for analytecontent <1 μg/g (ppm).
SRM (standard reference material) 1849a: indicate infant/adult nutritional formu.