Thesis

The Effect of Type and Concentration of Carrier Agent on Antioxidant Capacity and Physical Properties of Gotu Kola (Centella asiatica) Leaf Extract Microcapsule

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Centella asiatica has been used for medicine, pharmaceuticals, and food supplementation, owing to
its high phenolic and flavonoid content, as well as its significant antioxidant activity in the leaves. The
need to transform its extract into powder form using microencapsulation is currently emerging,
enabling convenience and versatility for various food industrial applications. Spray drying is the most
used method of microencapsulation that provides high-quality microencapsulates and better
retention of bioactive compounds by entrapping them in a carrier agent material. Spray drying
conditions undoubtedly determine the physical and antioxidant qualities contained in the resulting
powders. Thus, this study examined how gum arabic (GA) or resistant maltodextrin (RM) at different
ratios of extract to carrier agent (1:1 and 1:2) affect the physical and antioxidant characteristics of C.
asiatica extract (CAE) microcapsules. Physical properties were observed through parameters such as
encapsulation yield, moisture content (MC), water activity (Aw), color, and solubility, while total
phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity by DPPH and FRAP
assay were done to determine the antioxidant properties. The results showed that CAE:GA (1:1) had
significantly higher values for all antioxidant analyses, CAE:RM (1:1) was higher in yield, CAE:RM (1:2)
was lower in MC and Aw, and lighter in color (p≤0.05). Future studies are suggested to use an
industry-scale spray dryer and combine the usage of both carrier agents to improve the findings from
the current study.

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Availability

Detail Information

Series Title

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Call Number

FT 24-002

Publisher

i3L, Jakarta : i3L Press., 2024

Collation

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Language

English

ISBN/ISSN

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Classification

NONE

Content Type

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Media Type

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Carrier Type

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Edition

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Subject(s)

physical properties
Antioxidant properties
C. asiatica extract
spray dry
microencapsulation

Specific Detail Info

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Statement of Responsibility

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