Comparison of Classical and Ultrasound-Assisted Extraction Methods on Antioxidant Activities of Pharmaceutically Active Compounds from Valeriana Officinalis

2019 ◽  
Author(s):  
Sorush Niknamian
Keyword(s):  
Antioxidant Activities ◽  
Extraction Methods ◽  
Pharmaceutically Active Compounds ◽  
Valeriana Officinalis ◽  
Ultrasound Assisted Extraction ◽  
Active Compounds ◽  
Assisted Extraction ◽  
Ultrasound Assisted

scholarly journals EKSTRAKSI FIKOSIANIN DARI SPIRULINA PLANTESIS SEBAGAI BIOPIGMEN DAN ANTIOKSIDAN

2017 ◽  
Vol 8 (1) ◽  
pp. 36
Author(s):  
Siti Irma Rahmawati ◽  
Syarif Hidayatullah ◽  
Mira Suprayatmi
Keyword(s):  
Human Body ◽  
Spirulina Platensis ◽  
Extraction Method ◽  
Antioxidant Activities ◽  
Extraction Methods ◽  
Ultrasound Assisted Extraction ◽  
Freeze Thaw ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Better Than

Pewarna alami lebih disukai karena tidak memiliki efek yang negatif terhadap tubuh manusia sehingga mempunyai tingkat keamanan pangan yang tinggi, selain itu juga pewarna alami mudah diuraikan. Bahan pewarna alami bisa diperoleh dari berbagai jenis sumber, salah satunya yaitu spesies alga yang merupakan tumbuhan tingkat rendah di perairan. Alga terdapat 2 jenis yaitu makroalga yang berukuran besar dan mikroalga yang berukuran kecil (renik). Spesies mikroalga yang dapat menghasilkan pewarna alami salah satunya adalah Spirulina. Jenis pewarna alami yang terkandung pada mikroalga tersebut yaitu fikosianin. Pada penelitian ini, dilakukan ekstraksi fikosianin dari Spirulina platensis dengan menggunakan tiga metode berbeda yaitu Maserasi, Ultrasound-Assisted-Extraction (UAE) dan Freezing untuk mengetahui metode mana untuk menghasilkan yield dan antioksidan tertinggi dari ekstrak yang dihasilkan. Hasil dari penelitian ini didapatkan bahwa berdasarkan nilai yield tertinggi dan kandungan fikosianin, freezing merupakan metode ekstraksi terbaik dengan kandungan fikosianin yang paling tinggi yaitu sebesar 26,53%. Sedangkan nilai aktivitas antioksidan terbesar dihasilkan oleh metode ekstraksi maserasi dengan nilai IC50 sebesar 49,59 ppm. Fikosianin yang dihasilkan dari ketiga metode ekstraksi termasuk antioksidan kuat.KATA KUNCI: ekstraksi, Spirulina plantesis, fikosianin, biopigmen, antioksidanEXTRACTION OF PHYCOCYANIN FROM SPIRULINA PLANTESIS FOR BIOPIGMENT AND ANTIOXIDANTABSTRACTRecently, biopigment known as a pigment which has no impact and easy to degradated in human body and better than artificial pigment. Biopigment can be resulted from the extraction of algae that are living in the water. Spirulina plantesis is one of algae resulting a pigment and known as phycocyanin. In this research, extraction of phycocyanin was done by three method of extractions; maceration, Ultrasound-Assisted-Extraction (UAE) and Freeze-thaw. Those extraction methods were compared to decide which method that resulted highest yield of extraction and has highest antioxidant activities. From the resulted data, the highest yield and highest phycocyanin concentration was obtained by freeze-thaw extraction method. Phycocyanin concentration from freeze-thaw ectract was 26,53% (w/w). However, the highest antioxidant activities was obtained by maceraion extraction mehod. The IC50 of extract from maceration was 49,59 ppm. Hence, all extracts from different extraction methods resulted high antioxidant activities. 

scholarly journals Optimization of ultrasound-assisted extraction of procyanidins from perilla seed hull and their antioxidant activities in vitro

2019 ◽  
Vol 39 (2) ◽  
pp. 378-387 ◽  
Author(s):  
Hui-Zhen LI ◽  
Yong-Lan TAN ◽  
Zhi-Jun ZHANG ◽  
Yao-Yao XIA ◽  
Xiao-Jun LI ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Seed Hull ◽  
Ultrasound Assisted ◽  
Perilla Seed

scholarly journals Ultrasound-Assisted Extraction of Total Flavonoids from Corn Silk and Their Antioxidant Activity

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Ling-Li Zheng ◽  
Guan Wen ◽  
Min-Yong Yuan ◽  
Feng Gao
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Antioxidant Activities ◽  
Total Flavonoids ◽  
Ultrasonic Power ◽  
Ultrasound Assisted Extraction ◽  
Antioxidant Power ◽  
Corn Silk ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Object. Ultrasound-assisted extraction of total flavonoids from corn silk and their antioxidant activities were studied.Methods. Response surface methodology was adopted to optimize the extraction conditions and antioxidant activities of the extracted total flavonoids were detected through ferric reducing antioxidant power (FRAP) assay.Results. Through a three-level, three-variable Box-Behnken design of response surface methodology (RSM) adopting yield as response, the optimal conditions were determined as follows: ultrasonic power 500 W, extraction time 20 min, material solvent ratio 1 : 20, and ethanol concentration 30%. Under the optimum conditions, the extraction yield of total flavonoids was 1.13%. FRAP value of total flavonoids extracted from corn silk was 467.59 μmol/L.Conclusion. The total flavonoids of corn silk could be developed as food natural antioxidant reagents.

scholarly journals Effects of Ultrasound-Assisted Extraction and Solvent on the Phenolic Profile, Bacterial Growth, and Anti-Inflammatory/Antioxidant Activities of Mediterranean Olive and Fig Leaves Extracts

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1718 ◽  
Author(s):  
Cristina Alcántara ◽  
Tihana Žugčić ◽  
Radhia Abdelkebir ◽  
Jose V. García-Pérez ◽  
Anet Režek Jambrak ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Bacterial Growth ◽  
Extraction Methods ◽  
Olive Leaves ◽  
Ultrasound Assisted Extraction ◽  
Phenolic Profile ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Conventional Extraction ◽  
Anti Inflammatory

Mediterranean plants, such as fig and olive leaves, are well-known to exert beneficial effects in humans because of the presence of a wide range of bioactive compounds. However, scarce information regarding the impact of extraction methods, such as ultrasound and types of solvents, on their profile of antioxidant and anti-inflammatory compounds is provided. In addition, no information is available on the effects of extraction methods and solvents on the inhibition of pathogenic bacteria or promoting probiotic growth. In this scenario, this study was aimed to study the effects of ultrasound-assisted extraction (UAE) and solvent on the phenolic profile (Triple TOF-LC-MS/MS), antioxidant and anti-inflammatory compounds of olive and fig leaves. Results showed that UAE extracted more carotenoids compared to conventional extraction, while the conventional extraction impacted on higher flavonoids (olive leaves) and total phenolics (fig leaves). The antioxidant capacity of aqueous extract of fig leaves was three times higher than the extract obtained with ethanol for conventional extraction and four times higher for UAE. In general terms, hydroethanolic extracts presented the highest bacterial growth inhibition, and showed the highest anti-inflammatory activity. In conclusion, these side streams can be used as sources of bioactive compounds for further development of high-added-value products.

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