12 research outputs found
Robustness of chlorogenic acid, rutin and isoquercitrin.
<p>Robustness of chlorogenic acid, rutin and isoquercitrin.</p
HPLC chromatogram of standardized extract of <i>M</i>. <i>nigra</i> leaves (2 mg/mL).
<p>(A) Batch 1. (B) Batch 2. (C) Batch 3. (D) Batch 4. (E) Batch 5.</p
Linearity of chlorogenic acid, rutin and isoquercitrin.
<p>Linearity of chlorogenic acid, rutin and isoquercitrin.</p
Calibration curves for chlorogenic acid, rutin and isoquercitrin.
<p>Calibration curves for chlorogenic acid, rutin and isoquercitrin.</p
IC<sub>50</sub> values of five standardized extracts of <i>M</i>. <i>nigra</i> leaves compared to kojic acid.
<p>The significant differences related to the IC<sub>50</sub> values on tyrosinase inhibition activity (*<i>p</i><0.05) were calculated by Student's t test.</p
Quantification of chlorogenic acid, rutin and isoquercitrin of standardized extract of <i>M</i>. <i>nigra</i> leaves.
<p>The significant differences related to the concentration values of five batches in three experiments were calculated by one-way ANOVA with Tukey test (<sup><i>a</i></sup><i>p</i><0.05 <i>vs</i> Batch 2. <sup>b</sup><i>p</i><0.05 <i>vs</i> Batch 3. <sup><i>c</i></sup><i>p</i><0.05 <i>vs</i> Batch 1. <sup><i>d</i></sup><i>p</i><0.05 <i>vs</i> Batch 2. <sup><i>e</i></sup><i>p</i><0.05 <i>vs</i> Batch 3).</p
Specificity of the proposed method.
<p>(A) Acid hydrolysis and (B) Basic hydrolysis of diluted standardized extract of <i>M</i>. <i>nigra</i> leaves (2 mg/mL) λ = 354nm.</p
Tyrosinase inhibition activity profile of five standardized extracts of <i>M</i>. <i>nigra</i> leaves and kojic acid.
<p>Tyrosinase inhibition activity profile of five standardized extracts of <i>M</i>. <i>nigra</i> leaves and kojic acid.</p