Integrated Science Education Journal
Vol 7 No 5 (2026): September

Microcapsule Formulation of Pumpkin Seeds (Cucurbita moschata) as a Potential Supplement to Support Iron and Zinc Adequacy in Stunting Prevention

Ade Sitorus (Universitas Adiwangsa Jambi)
Hena Pebrianti (Universitas Adiwangsa Jambi)
Luisa Luisa (Universitas Adiwangsa Jambi)
Desfira Desfira (Universitas Adiwangsa Jambi)
Rahmadevi Rahmadevi (Universitas Adiwangsa Jambi)
Amraini Amelia (Universitas Adiwangsa Jambi)



Article Info

Publish Date
30 Sep 2026

Abstract

Purpose of the study: Iron (Fe) and zinc (Zn) deficiencies significantly contribute to childhood stunting. Pumpkin seeds (Cucurbita moschata) are rich in these minerals, but poor palatability and rapid gastric degradation limit their direct use as a food ingredient. This study aimed to microencapsulate pumpkin seed powder with gum arabic via solvent evaporation to protect key micronutrients and enhance targeted mineral delivery. Methodology: The prepared experimental samples were characterized using PSA, FTIR, AAS, and a binocular microscope. We formulated microcapsules with a high-speed homogenizer using the solvent evaporation technique, and statistically analyzed the data using ANOVA in SPSS. Main Findings: The synthesized pumpkin seed microcapsules were powder-shaped, yellow, aromatic, and tasteless. Formulas ranging from 1.5:5 to 3.5:5 were the most stable through the sixth cycle. The yield (38.8%–77%), particle size (54.68–60.70 μm), and particle uniformity were optimal at a 4.5:5 ratio, exhibiting round morphological shapes. Mineral concentrations reached 18–101 mg/L for Fe and 11–79 mg/L for Zn, with encapsulation efficiency between 2.81% and 30.01%. FTIR spectra showed characteristic peaks from both raw materials, and microbiological testing confirmed safety under official BPOM standards. Novelty/Originality of this study: Increasing the active ingredient ratio significantly enhanced mineral uptake without altering the fundamental chemical structure. The primary novelty lies in utilizing pumpkin seed waste encapsulated in gum arabic via solvent evaporation. These stable microcapsules represent a safe, effective, and economical local food fortification agent to address stunting.

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Journal Info

Abbrev

ISEJ

Publisher

Subject

Education Social Sciences

Description

Covers all the Integrated Science Education Journal (ISEJ) at the level of primary, secondary, senior, and higher education. The goal of this journal is to bring together researchers and practitioners from academia and industry to focus on Educational advancements and establishing new collaborations ...