Thesis

Pickering Emulsion Stabilized by Unfractionated White Turmeric (Curcuma zedoaria) Pomace: A Study on the Physical Stability

---

Pickering emulsion is an emulsion type where stability is achieved through the use of solid particles
instead of surfactants. Jamu, specifically white turmeric (Curcuma zedoaria), is one of the
contributors of food by-products in Indonesia and the by-products could be used as Pickering
particles. Therefore, this project aimed to evaluate the feasibility of unfractionated white turmeric
(Curcuma zedoaria) pomace powder to stabilize Pickering emulsion. This paper analyzed the effect of
the oil and knife-milled powder ratio towards its stability and also the effect of powder milling on the
stability and texture of the emulsion. The unfractionated pomace was processed thermodynamically
into powders and it was made into emulsions with different oil-powder ratios formulated using the
RSM for the first objective. The stability was analyzed on day 0 and 7. An unstable formulation was
chosen for the second objective and it was made with knife-milled and ball-milled powders. Stability
was measured along with texture analysis and powder characterization. Results indicated that
backscattered value increased along with the increase in powder% (p-value= 0.0148) and decrease in
oil% (p-value= 0.0097). The increase in powder% (p-value= 0.0202) also resulted in a more stable
coalescence index. The creaming index was significantly affected by oil% (p-value= 0.0108), powder%
(p-value= 0.004), quadratic effect of oil% (p-value= 0.0277), and the oil%*powder* interaction
(p-value= 0.0334). Additionally, ball-powders showed a more stable and more firm emulsion
compared to knife-milled powders (p-value BV= 0.001; Coal=

---

Availability

Detail Information

Series Title

-

Call Number

FT 24-015

Publisher

i3L, Jakarta : i3L Press., 2024

Collation

-

Language

English

ISBN/ISSN

-

Classification

NONE

Content Type

-

Media Type

-

Carrier Type

-

Edition

-

Subject(s)

white turmeric
rhizome pomace
Pickering emulsion
emulsion stability
valorization

Specific Detail Info

-

Statement of Responsibility

-

Other version/related

File Attachment

Comments

---

You must be logged in to post a comment