| dc.description.abstract | This study delves into finding the best betacyanins extraction process from red
dragon fruit peel using ultrasonic extraction, a promising technique to produce natural
colorants. The study evaluated the combined impact of many different factors on
extraction efficiency, including solvent concentration, solvent/material ratio,
extraction time and number of extraction cycles. The analysis not only quantified the
betacyanins content obtained per 100 grams of dried peel but also studied the melting
point, and the free radical scavenging ability against DPPH and ABTS radicals, which
are related to its antioxidant properties. The results showed that 60% ethanol solution,
solvent/sample ratio of 20:1 (v/w), 25 minutes of ultrasound time and one-time
extraction provided the highest extraction efficiency. Betacyanins content in 100
grams of dry matter is 123.75 g/100g. Furthermore, betacyanins have a high melting
point of 187°C, showing good thermal stability during product formulation and
storage. Importantly, the extract demonstrated significant free radical scavenging
activity against both DPPH and ABTS radicals, with IC50 values of 133.43 µg/mL
and 287.80 µg/mL, respectively. These findings highlight the potential of red dragon
fruit peel as a sustainable source of natural colorants for the cosmetics industry.
Betacyanins extracted using this optimal method provide a safe, stable and effective
alternative to synthetic colorants, allowing the creation of high-quality lipsticks with
vibrant colors and excellent wearability potential antioxidant capacity. | en_US |
