OPTIMASI EKSTRAKSI SENYAWA FENOLIK DARI KELOPAK BUNGA ROSELLA (Hibiscus sabdariffa) BERBANTU GELOMBANG MIKRO

Maksum, Ali; Purbowati, Ike Sitoresmi Mulyo

doi:10.20884/1.agrin.2017.21.2.368

Cited by 6 publications

(6 citation statements)

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“…Beberapa contoh bahan yang sudah pernah dijadikan sebagai bahan aditif dalam membantu proses pembuatan tempe adalah kunyit sebagai pewarna alami dan asam sitrat untuk mempercepat proses fermentasi (Suhmawati et al, 2017;Mubarok et al, 2019). Maksum & Purbowati (2018) melaporkan bahwa ekstrak bunga rosela mengandung vitamin C, dimana berperan sebagai zat antioksidan yaitu sebesar 10,74±0,14 mg/g dan IC50 202,47 μL/mL. Bagian kelopak bunganya kaya akan antioksidan yang berperan sebagai pengikat radikal bebas dan sering dimanfaatkan sebagai pewarna alami.…”

Section: Pendahuluanunclassified

Penambahan Serbuk Kelopak Bunga Rosela (Hibiscus sabdariffa L.) untuk Meningkatkan Aktivitas Antioksidan pada Tempe Kedelai

Sitanggang

Dewi

2023

J-AGT

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Tempeh is a traditional food product made from soybeans through a fermentation process by tempeh mold (Rhizopus sp.). This food product besides having high nutritional value also contains antioxidant compounds which are very good for consumption but with a relatively low IC50 value. This study used rosella flower calyx (Hibiscus sabdariffa L.) which are believed to have a high enough antioxidant content so they are effective in increasing the antioxidant content in tempeh. Furthermore, the addition of rosella calyx powder will give tempeh an attractive taste, aroma, and color. The objective of this research was to determine the effect of rosella calyx powder addition on tempeh making with various concentrations, i.e. 0% (P0), 0.5% (P2), 1% (P3), 1.5% (P4), and 2% (P5). The antioxidant activity using the DPPH method, the organoleptic properties based on the preference level (hedonic) using a questionnaire, and the water content of tempeh based on the principle of gravimetry method were also tested. The result showed that the IC50 value of 2% concentration of rosella calyx powder addition (P5) was 1596.9 ppm. IC50 of the P5 treatment was the highest antioxidant activity power category compared the other treatment, even though it was still relatively low in antioxidant activity. Then on the organoleptic test, the results showed that the addition of rosella flower calyx powder was able to affect the taste, color, and aroma of tempeh and has no effect on the water content of tempeh. Keywords: antioxidant, organoleptic, rosella, tempeh, water content

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Section: Pendahuluanunclassified

Penambahan Serbuk Kelopak Bunga Rosela (Hibiscus sabdariffa L.) untuk Meningkatkan Aktivitas Antioksidan pada Tempe Kedelai

Sitanggang

Dewi

2023

J-AGT

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“…This was due to the fact that the extraction time which was longer than 5 minutes did not increase the total phenol extracted and even decreased the total phenol produced. Time longer than 5 minutes causes damage to the extracted phenolic compounds, due to the longer contact time between heat and extraction results (13). As it is known that phenolic compounds are generally not resistant at high temperatures so they can experience thermal degradation [14].…”

Section: Total Phenolic Contentmentioning

confidence: 99%

Effect of microwave assisted extraction on total phenolic, flavonoids, and antioxidant from Stenochlaena palustris leaves

Lidia,

Mahardika

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Degenerative disease is a disease caused by too many free radicals in the body. To neutralize, reduce, and inhibit the formation of new free radical compounds in the body, antioxidant compounds are needed. One source of antioxidants can come from plants that contain phenolic compounds. S. palestris plant is one of the plants from Bangka Belitung which contains phenolic compounds. The purpose of this study was to determine the effectiveness of the microwave assisted extraction method for the total phenolic and flavonoid content and antioxidants in the chloroform, acetone, and methanol extracts of S. palustris leaves with MAE times of 5, 10, 15, and 30 minutes (60° C, 1200 Watts). Based on the results of the analysis of the average yield values, total phenolics, total flavonoids, and antioxidant activity of the leaves of S. palustris using the MAE method had higher results compared to maceration. Based on the time difference used, the 5 minute MAE time has a higher value than the 10, 15, and 30 minute time. In terms of the extraction time used and the results obtained, the MAE method is more efficient and effective than the maceration method.

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“…In addition, microwaves can also reduce enzymatic activity which is the result of damage to the extracted compounds, the result of microwave heat will be an inhibitor of phenolase enzyme activity. And in [17] regarding extracts of phenolic compounds from rosella flower petals with microwaves which stated that an increase in the total phenol produced was in line with an increase in microwave power. This increase is due to the direct influence of microwave energy on biomolecules by ionic conduction and dipole rotation resulting in molecular motion and heating.…”

Section: Effect Of Variables (Power Ethanol Concentration and Radiati...mentioning

confidence: 99%

Optimization of Extraction of Bioactive Compound from Pegagan Leaves Using Ethanol Solvent With Microwave-Assisted Extraction Method (MAE)

Rohmah

Rahmawati²,

Rizkiana³

et al. 2022

J. Biobas. Chem.

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Treatment using natural ingredients in Indonesia is the main choice that is growing in society. This is because treatment with natural ingredients has relatively milder side effects compared to synthetic treatment. Therefore, further research is needed on natural ingredients that can be used as natural medicines, one of which is pegagan (Centella asiatica (L.)). Several studies have found bioactive compounds in pegagan that can be used as medicine by various methods. The author wants to know the optimal conditions for extracting pegagan bioactive compounds using the microwave-assisted extraction (MAE) method. This study used pegagan leaf size 40 mesh that had been dried. pegagan leaves were extracted using ethanol as a solvent with microwave power, solvent concentration, and extraction time as variables. Variable power 150 watts, 300 watts, and 450 watts. Variable solvent concentration 25%, 50%, and 75%. Variable extraction time for 5, 10, and 15 minutes. Analysis of the results of the study was carried out using total phenol analysis using the Folin-Ciocalten method. The research data obtained optimum operating conditions at 75% solvent concentration, 450-watt microwave power, and extraction time of 10 minutes with a total phenol content of 1251.410225 mg AGE/g sample.

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OPTIMASI EKSTRAKSI SENYAWA FENOLIK DARI KELOPAK BUNGA ROSELLA (Hibiscus sabdariffa) BERBANTU GELOMBANG MIKRO

Cited by 6 publications

References 0 publications

Penambahan Serbuk Kelopak Bunga Rosela (Hibiscus sabdariffa L.) untuk Meningkatkan Aktivitas Antioksidan pada Tempe Kedelai

Penambahan Serbuk Kelopak Bunga Rosela (Hibiscus sabdariffa L.) untuk Meningkatkan Aktivitas Antioksidan pada Tempe Kedelai

Effect of microwave assisted extraction on total phenolic, flavonoids, and antioxidant from Stenochlaena palustris leaves

Optimization of Extraction of Bioactive Compound from Pegagan Leaves Using Ethanol Solvent With Microwave-Assisted Extraction Method (MAE)

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