striata As shown in Figure 1 , it can be seen that within 20~50 min, the UVB absorption rate showed a trend of first increasing and then decreasing with the extension of the extraction time, and the extraction rate was the highest at 50 min, which is statistically significant when compared to the average value.
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Optimization of an Ultrasound-Assisted Extraction Technique and the Effectiveness of the Sunscreen Components Isolated from <i>Bletilla striata</i>.
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