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Berkah, Fitroh Bawa
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Engineering

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Extraction of Rose Hybrid Tea Oil with Microwave Assisted Integration of Mahd as a Diffuser Berkah, Fitroh Bawa; Devanda, Ilyas Rabbani; Wibisono, Enggar Sulistyo; Paramita, Vita
Journal of Vocational Studies on Applied Research Volume 6, Issue 1, Year 2024 (April 2024)
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jvsar.v6i1.23714

Abstract

Rose flower have rich compound of oils that are used in many things for example in parfuem industries. Rose flower contains rich of oils fragrance such as eugenol, citronellol, geraniol, nerol, and linalool. This compounds has been used in variety of parfuem and many application has been used such as air freshener, softener, and diffusier. The objective of this research was to find out how to separate essential oils from rose flowers with Microwave Assisted Hydro Distilation and test them as diffusers and to find out the characteristics of essential oil. The extraction process takes place with two variables independent for time and power of extraction with their respective combinations of power: time (watt:minutes) namely; (300/15, 300/25, 300/35, 400/15, 400/25, 400/35, 500/15, 500/25, 500/35). The sample was prepared by make a solution with ratio of solvent (water distillation) and rose petals repeatedly 3:1 (v/m). During the research, an analysis of the yield of extract rose was carried out with a best result of 0.012% and the density produced 1,096 gr/ml. Organoleptic test was obtained with colored white limestone and typical odor of essential oil of rose flowers
Multi-Response Optimization of Mangosteen Peel Extraction Using Natural Deep Eutectic Solvent and Microwave Assisted Extraction for Anti-Aging Berkah, Fitroh Bawa; Paramita, Vita
Journal of Vocational Studies on Applied Research 2025: Just Accepted Manuscript and Article In Press 2025
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jvsar.v0i0.26555

Abstract

The peel of mangosteen (Garcinia mangostana L.) is rich in bioactive compounds, including xanthones, phenolics, flavonoids, anthocyanins, and vitamin C, which have been associated with antioxidant, anti-inflammatory, and anti-aging properties. This study aimed to optimize the extraction of these compounds, particularly xanthones, using Microwave-Assisted Extraction (MAE) in combination with a Natural Deep Eutectic Solvent (NADES) consisting of lactic acid, sodium acetate, and distilled water in a 3:1:2 volume ratio. The extraction process was carried out under varying microwave power levels (300, 375, and 450 Watt) and extraction times (2, 4, and 6 min). Optimization was conducted using Response Surface Methodology (RSM), and the resulting bioactive compound contents were analyzed by UV-Vis spectrophotometry. The optimal extraction conditions were determined at 300 Watt and 4.46 min, resulting in xanthone (1.40%), phenolics (42.43%), flavonoids (1.22%), anthocyanins (1.20%), and vitamin C (2.94%). These findings indicate that NADES-MAE is an effective green extraction technique for maximizing bioactive compounds from mangosteen peel, supporting its potential use in anti-aging product formulations.
Co-Authors Devanda, Ilyas Rabbani Vita Paramita Wibisono, Enggar Sulistyo