SEAS (Sustainable Environment Agricultural Science)
Vol. 10 No. 1 (2026)

Functional Characteristics of Blanched Dried Gonda Vegetables (Sphenoclea zeylanica) Using Freeze Drying

I Wayan Ryantama Swastika Braja (Udayana University)
Anak Agung Istri Sri Wiadnyani (Department of Food Technology, Faculty of Agricultural Technology, Udayana University)



Article Info

Publish Date
30 Apr 2026

Abstract

Gonda vegetable (Sphenoclea zeylanica) is a functional food rich in phenolic compounds, flavonoids, tannin, and vitamin C, which contribute to its antioxidant activity. Fresh gonda has a relatively short shelf life therefore, dried gonda products are developed to improve practicality, extend shelf life, and preserve bioactive components. This study employed a Completely Randomized Design (CRD) with a single treatment factor (pre-treatment) consisting of two levels, namely blanching and unblanching. The drying process was carried out using the freeze-drying method. Each treatment was replicated three times, resulting in a total of 6 experimental units. The data were statistically analyzed using an independent two-sample t-test to determine differences conducted to compare the findings with those of previous studies. The results indicated that the blanching pre-treatment combined with the freeze-drying produced the most favorable functional characteristics of dried gonda. These included a moisture content of 13.64%, yield of 16.11%, rehydration capacity of 116.36%, flavonoid content of 0.066 mg QE/g, tannin content of 0.57 mg TAE/g, vitamin C content of 0.19 mg AAE/g, and antioxidant activity of 66,43%. Color analysis showed L and a* values of 23.65 and -29.21, respectively. Sensory evaluation revealed that the color of dried gonda was rated as bright with a scoring value of 3.00 and was well accepted, with hedonic score of 4.47. The texture received a scoring value of 2.00 (slightly soft) and a hedonic score of 3.00 (neutral), while the overall acceptability reached 3.60 indicating a favorable level of consumer acceptance.

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Journal Info

Abbrev

seas

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

Description

SEAS (Sustainable Environment Agricultural Science) is a Journal of development of science and technology in environment usage and management on an on-going basis for agricultural development, provides a forum for publishing research articles or review articles. This journal has been distributed by ...