Microwave-Assisted Extraction of Ocimum basilicum L. Seed, Trigonella foenum-graecum Seed, and Plantago ovata Forsk Seed Husk Hydrocolloids Compared with Conventional Heating Extraction at Optimum Extraction Conditions

Metode Microwave-Assisted Extraction (MAE) digunakan untuk mengekstraksi senyawa flavonoid dari simplisia alga coklat Padina australis. Sampel diperoleh dari Pantai Bayah, Banten Indonesia. Kondisi optimal ekstraksi ditentukan dengan Response Surface Methodology (RSM). Desain Box-Behnken (BBD) digunakan untuk mengevaluasi pengaruh 3 faktor dengan 3 level yaitu daya microwave (300, 450, 600 watt), konsentrasi etanol (30, 50, 70%), dan waktu ekstraksi (7, 8 dan 9 menit) dengan 15 perlakuan yang berbeda. Hasil disain eksperimen dengan BBD menunjukkan kondisi ekstraksi optimum yaitu pada daya microwave 414 watt, konsentrasi etanol 50,33% dan waktu ekstraksi 7,89 menit menghasilkan kadar prediksi flavonoid sebesar nilai 0,2963%. Nilai ini mendekati nilai kadar flavonoid yang diperoleh secara eksperimental sebesar 0,2961%, pada kondisi menggunakan daya microwave sebesar 450 watt, konsentrasi etanol 50% dengan lama ekstraksi 8 menit. Berdasarkan hasil penelitian, kadar flavonoid total dapat meningkat secara signifikan dengan melakukan optimasi proses MAE menggunakan RSM.Optimization of Microwave-Assisted Extraction for Total Flavonoid Content of Padina australis Brown Algae. Microwave-Assisted Extraction (MAE) was done to extraction flavonoid from Padina australis brown algae simplicial. The sample collected from Bayah coastal waters, Banten Indonesia. Optimum extraction condition was determined by the response surface methodology (RSM). The Box-Behnken design (BBD) was used to evaluate the influence of 3 factors with 3 levels extraction that is microwave power (300, 450, 600 watts), ethanol concentration (30, 50, 70%), and extraction time (7, 8 and 9 minutes) with 15 different runs. The research showed that optimum extraction condition was at 414 watts of microwave power, 50.33% ethanol concentration, and time extraction of 7.89 minutes yielded a predicted value of total flavonoid content of 0.2963%. This value approaches to the flavonoid content obtained experimentally at 0.2961% under condition of 450 watts microwave power, 50% ethanol concentration, and time extraction of 8 minutes. Based on the result, total flavonoid content can be significantly increased by optimizing the MAE process use RSM.

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OPTIMASI KONDISI UNTUK RENDEMEN HASIL EKSTRAKSI KULIT MANGGIS (Garcinia mangostana L.) Optimization of Conditions for Yield Extraction of Mangosteen Pericarp (Garcinia mangostana L.)

FITOFARMAKA: Jurnal Ilmiah Farmasi ◽

10.33751/jf.v2i2.170 ◽

2012 ◽

Vol 2 (2) ◽

pp. 153-159

Author(s):

Akhmad Endang Zainal Hasan ◽

Husain Nashrianto ◽

Rani Novia Juhaeni

Keyword(s):

Response Surface Methodology ◽

Ethanol Concentration ◽

Heating Time ◽

Microwave Assisted Extraction ◽

Garcinia Mangostana ◽

Microwave Assisted ◽

Assisted Extraction ◽

Water As Solvent ◽

Optimum Extraction ◽

Central Composite

The aim of this study is to determine the levels of yield extract of mangosteen pericarp extracted using Response Surface Methodology (RSM) Central Composite Design (CCD) with various concentrations of ethanol (in the range of 45 to 96 %) and duration of microwave heating (in the range 5.8 to 34.1 o C) or Microwave Assisted Extraction (MAE). The yield extract was calculated as percentage to the weight of origin. The results showed that optimum extraction conditions for yield extract were at ethanol concentration of 70% and heating time of 31.5 minutes which resulted in yield extract of 19.45%. More over, under these conditions resulted yield of 19.83%. The yield extract equation of mangosteen pericarp is Y = -73,7883 + 0,5293 X heating time and X 2 1 + 2,4230 X 2 is ethanol concentration in water as solvent. 0,0084X12 0,00173 X2 2 , where X1 is heating time and X2 is ethanol concentration in water as solvent.Key words : Optimization, Mangosteen, RSM CCD, MAE, yield

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OPTIMIZATION OF PHENOLIC COMPOUNDS EXTRACTION FROM PURPLE BASIL LEAF BY CONVENTIONAL AND MICROWAVE ASSISTED EXTRACTION METHOD

Latin American Applied Research - An international journal ◽

10.52292/j.laar.2021.569 ◽

2021 ◽

Vol 51 (4) ◽

pp. 285-292

Author(s):

Basak ebru Ozcan ◽

Osman Sagdic ◽

Salih Karasu ◽

Kubra Ozkan ◽

Alican Akcicek

Keyword(s):

Extraction Methods ◽

Extraction Yield ◽

Total Phenolic ◽

Microwave Assisted Extraction ◽

Total Anthocyanin ◽

Microwave Assisted ◽

Assisted Extraction ◽

Conventional Solvent Extraction ◽

Phenolic Extraction ◽

Optimum Extraction

The present study aimed to determine the optimum extraction conditions of conventional solvent extraction (CSE) and microwave-assisted extraction (MAE) techniques to obtain maximum total phenolic (TPC), total flavonoid (TFC), total anthocyanin (TAC) and antioxidant capacity (AA). Response surface methodology (RSM) and central composite design (CCD) were used to determine optimum points of CSE and MAE. Both two extraction methods, all parameters significantly affected TPC, AA, TFC and TAC (p<0.05). MAE showed higher bioactive compounds yield than that of CSE. Optimum point for CSE and MAE was found to be 60Â°C and 30 min and 591.83 W and 2.98 min respectively. TPC, AA, TFC and TAC were obtained as 33.81mg/g, 160.27 mg/g, 11.89 mg/g and 331.01 mg/kg for CSE and 62.99 mg/g, 214.62 mg/g, 21.80 mg/g and 3462.93 mg/kg for MAE respectively. This study recommended that the MAE should be used for the extraction of PBL to increase phenolic extraction yield.

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