Fruit Sweetness Characterization Using Impedance Spectroscopy Method

Setiadi, Rahmondia Nanda; Umar, Lazuardi

doi:10.21009/spektra.042.04

Cited by 2 publications

(2 citation statements)

References 14 publications

(14 reference statements)

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“…They normally choose the sweet ones. Studies of fruit sweetness have been done by using various methods in many fruits (Setiadi and Umar, 2019). Furthermore, the relationship between sugar content and degree Brix has been done (Pistón et al, 2017).…”

Section: Sugar Distribution Within the Fruitsmentioning

confidence: 99%

Variation in Sugar Content and Distribution in Syzygium Samarangense Fruits

Widodo,

Proklamasiningsih,

Dwiati

et al. 2023

Floribunda

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Jambu semarang (Syzygium samarangense) terdiri dari banyak kultivar dengan kadar gula yang berbeda-beda. Pada setiap buah, kandungan gulanya tidak merata. Tingkat kemanisan buah seringkali menjadi penentu nilai ekonomi dari jambu semarang. Tujuan penelitian ini adalah 1) untuk mengetahui sebaran gula pada berbagai kultivar jambu semarang, 2) mengetahui sebaran kadar gula di dalam buahnya, 3) mengetahui pengaruh rerata hari hujan per bulan terhadap kandungan gula buah. Metode yang digunakan dalam penelitian ini adalah survei dengan purposive sampling, observasi laboratorium dengan mengukur kadar gula dengan refraktometer, mengkorelasikan faktor lingkungan dengan kandungan gula buah. Hasil penelitian ini menunjukkan bahwa buah dengan kadar gula tertinggi terdapat pada kultivar Syzygium samarangense 'Sukaluyu' (maks 16,5 ◦Brix), S. samarangense 'Madu' (maks 14 ◦Brix), S. samarangense 'Kesuma Merah’ (max 10.5 ◦Brix), S. samarangense 'Citra' (maks 8.5◦Brix) yang cocok untuk buah-buahan segar. Sedangkan yang kadar gulanya rendah seperti S. samarangense 'Bajang Leang’ (4.5 ◦Brix), S. samarangense 'Kuning’ (4 ◦Brix) lebih cocok untuk lutis. Pada buah S. samarangense, gula tertinggi biasanya terakumulasi di bagian ujung buah, dan gula terendah berada di pangkal buah. Kadar gula berkorelasi negatif dengan rerata hari hujan per bulan. Makin sedikit hari hujan, buah semakin manis.

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Section: Sugar Distribution Within the Fruitsmentioning

confidence: 99%

Variation in Sugar Content and Distribution in Syzygium Samarangense Fruits

Widodo,

Proklamasiningsih,

Dwiati

et al. 2023

Floribunda

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show abstract

“…Therefore, electrochemical impedance spectroscopy (EIS) has been widely used to assess and evaluate changes in the quality of fruits and vegetables [1][2][3][4]. Since EIS is a non-destructive, simple, and fast measurement technique, it has been applied to investigate the relationship between electrical properties and quality of fruits and vegetables such as apples [5][6][7][8][9][10][11][12], bananas [10,12,13], orange [14], papaya [15], mango [16], melon [17], tomato [18,19], potato [20,21], and carrot [22]. The EIS measurement system is generally configured with an impedance analyzer or an LCR meter connected with two or four-port electrodes and an open-ended coaxial probe to measure the impedance of the plants.…”

Section: Introductionmentioning

confidence: 99%

RF Analysis of Fruit and Vegetables using Equivalent Circuits Deduced from S-parameters

Chinen¹,

Nakamoto²,

Kinjo

2023

IJECER

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We deduced equivalent circuits of the electrical properties of five fruit and eight vegetable samples from the S-parameters. The S-parameters were measured at a frequency range from 1 MHz to 100 MHz using a portable VNA and a tiny three-pin SMA probe. Admittance values calculated from the S-parameters were plotted on the admittance Smith chart, and the equivalent circuits with four parallel sub-circuits were synthesized by curve fitting. The admittance curves for the fruit and vegetable samples have two parts with different lengths split at a frequency of about 30 MHz. The admittance in the low-frequency range was determined mainly by two large capacitive and two small resistive elements of the equivalent circuit related to the plant cell wall and membrane. When the plant cell wall and membrane were decomposed by grating and 30µm-filtering, the specific part of the admittance curve was eliminated, and the admittance value increased. The measured and calculated admittance curves were in good agreement. About 30 samples of plant cultivars were classified as fruit and vegetables according to four criteria deduced from the RF analysis. S-parameter spectroscopy (SPS) is an effective analytical method for evaluating the electrical properties of plant tissues.

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Fruit Sweetness Characterization Using Impedance Spectroscopy Method

Cited by 2 publications

References 14 publications

Variation in Sugar Content and Distribution in Syzygium Samarangense Fruits

Variation in Sugar Content and Distribution in Syzygium Samarangense Fruits

RF Analysis of Fruit and Vegetables using Equivalent Circuits Deduced from S-parameters

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