scholarly journals Studi Literatur Implementasi Metode Microwave Assisted Extraction (MAE) untuk Ekstraksi Fenol dengan Pelarut Etanol

FLUIDA ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 80-87
Author(s):  
Nadya Amelinda Zahar ◽  
Neila Zakiah Hanun ◽  
Fitria Yulistiani ◽  
Heriyanto
Keyword(s):  
Mean Squared Error ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Squared Error ◽  
Assisted Extraction

Ekstraksi kandungan fenol menggunakan metode Microwave Assisted Extraction (MAE) dengan pelarut etanol telah banyak dilakukan dengan berbagai perbedaan nilai parameter. Tujuan yang akan dicapai dalam studi literatur ini yaitu untuk mendapatkan rasio liquid to solid (L/S), waktu ekstraksi, dan temperatur ekstraksi optimum pada setiap bahan yang merupakan parameter yang biasa divariasikan. Studi literatur ini menggunakan metode analisis secara deskriptif dengan cara mengumpulkan data dari literatur yang diperoleh serta mengolah data dengan cara melihat nilai Mean Squared Error (MSE) yang didapatkan. Hasil studi literatur menunjukan bahwa nilai optimum pada setiap bahan berbeda. Rasio L/S yang optimum sebesar 17,5/1 (v/w) pada akar manis. Waktu ekstraksi yang optimum sebesar 1,5 menit pada daun sirih merah, 22 menit pada rambut jagung, 6 menit pada akar manis, dan 30 menit pada daun kelor. Temperatur ekstraksi yang optimum sebesar 40°C pada daun sirih merah dan 180°C pada daun kelor.

Orthogonal test in optimizing microwave-assisted extraction process of magnolin from Magnoliae Flos

2010 ◽  
Vol 30 (5) ◽  
pp. 567-568
Author(s):  
Xiao-li LI ◽  
Ming-yuan ZHANG ◽  
Wei-quan ZHAO ◽  
Man Li ◽  
Hai-ying TENG ◽  
...  
Keyword(s):  
Extraction Process ◽  
Orthogonal Test ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction

Optimization of the Microwave-Assisted Extraction of Azadirachta indica (Neem) Leaves Using NMR-based Metabolic Fingerprinting

2015 ◽  
Vol 11 (3) ◽  
pp. 142-145 ◽  
Author(s):  
Simone Carradori ◽  
Luisa Mannina ◽  
Federica De Cosmi ◽  
Tamara Beccarini ◽  
Daniela Secci ◽  
...  
Keyword(s):  
Azadirachta Indica ◽  
Metabolic Fingerprinting ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Neem Leaves

scholarly journals Sustainable Biosynthesis of Antioxidants from Koji Rice Fermented with Aspergillus flavus Using Microwave-Assisted Extraction

2021 ◽  
Vol 11 (1) ◽  
pp. 430
Author(s):  
Hassan Hadi Mehdi Al Rubaiy ◽  
Ammar Altemimi ◽  
Ali Khudair Jaber Al Rikabi ◽  
Naoufal Lakhssassi ◽  
Anubhav Pratap-Singh
Keyword(s):  
Ethyl Acetate ◽  
Aspergillus Flavus ◽  
Bioactive Compounds ◽  
Ethylenediaminetetraacetic Acid ◽  
Ethyl Acetate Extract ◽  
Antioxidant Properties ◽  
Antioxidant Compounds ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction

The present study proposes microwave-assisted extraction as a sustainable technique for the biosynthesis of bioactive compounds from rice fermented with Aspergillus flavus (koji). First, fermentation conditions (i.e., pH from 3–12, five temperatures from 20–40 °C, and four culture-fermentation media viz. wheat, wheat bran, malt and rice) were optimized for producing microbial bioactive compounds. Microwave extraction was performed at 2450 MHz and 500 W for 20, 30, and 40 s with seven solvents (distilled water, ethyl acetate, hexane, ethanol, chloroform, diethyl ether, and methanol). The obtained results revealed that ethyl acetate is the most appropriate solvent for extraction. Effects of this ethyl acetate extract were compared with a commercial synthetic antioxidant. Antioxidant properties were enhanced by preventing the oxidation of the linoleic acid (C18H32O2) with an inhibition rate (antioxidant efficacy) of 73.13%. Notably, the ferrous ion binding ability was marginally lower when compared to the disodium salt of ethylenediaminetetraacetic acid (EDTA). Additionally, the obtained total content of phenolic compounds in the ethyl acetate extract of fermented rice (koji) by Aspergillus flavus was 232.11 mg based on gallic acid/mL. Antioxidant compounds in the ethyl acetate extract of fermented rice showed stability under neutral conditions, as well as at high temperatures reaching 185 °C during 2 h, but were unstable under acidic and alkaline conditions. The results demonstrate the efficacy of novel microwave-assisted extraction technique for accelerating antioxidant production during rice fermentation.

Sign in / Sign up

Export Citation Format

Share Document