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Table 1 SPF result with purified melanin from D. schimae NM3 strain

From: Biocompatibility and radioprotection by newly characterized melanin pigment and its production from Dietzia schimae NM3 in optimized whey medium by response surface methodology

λ

Abs

290

0.005595

295

0.02737

300

0.08737

305

0.087523

310

0.043804

315

0.021814

320

0.004464

SPF = CF × λ × I[λ] × Abs[λ]

SPF = 10 × 1 × 2.022 = 20.22

  1. EE erythema effect spectrum, I solar intensity spectrum, Abs the absorbance of sunscreen product (OD), CFs correction factor (= 10)