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  • Universitas Gadjah Mada  (2)
  • 1
    Online Resource
    Online Resource
    Universitas Gadjah Mada ; 2022
    In:  Indonesian Journal of Chemistry Vol. 22, No. 4 ( 2022-07-18), p. 887-
    In: Indonesian Journal of Chemistry, Universitas Gadjah Mada, Vol. 22, No. 4 ( 2022-07-18), p. 887-
    Abstract: The present study attempted to evaluate the suitable conditions for essential oil extraction from the fruit of Triphasia trifolia using hydrodistillation technique. The effect of various factors such as material size, solvent to solid ratio, heating temperature and distillation time, state of maturation, and fruit preservation on the oil yield was investigated. The physicochemical property, chemical composition, and biological properties were accessed. The highest yield of essential oil (7.9 mL/kg dry matter) from T. trifolia was obtained at optimal conditions such as fine particle size, solid to solvent ratio of 1:5, temperature oil bath of 140 °C, and distillation time of 3 h. The state of maturation of the fruits significantly affects the essential oil yield and insignificantly influences chemical composition based on the gas chromatography-mass spectrometry (GC-MS) analysis. It was found that the essential oil yield decreases significantly when ripened fruits are not kept in cool conditions before distillation. It implied that ripened fruits should be immediately processed or kept in cool storage to maintain the essential oil yield. Our findings will help produce high-quality essential oil from T. trifolia at a pilot or industrial scale.
    Type of Medium: Online Resource
    ISSN: 2460-1578 , 1411-9420
    Language: Unknown
    Publisher: Universitas Gadjah Mada
    Publication Date: 2022
    detail.hit.zdb_id: 3069950-2
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  • 2
    Online Resource
    Online Resource
    Universitas Gadjah Mada ; 2020
    In:  Indonesian Journal of Chemistry Vol. 20, No. 2 ( 2020-03-02), p. 430-
    In: Indonesian Journal of Chemistry, Universitas Gadjah Mada, Vol. 20, No. 2 ( 2020-03-02), p. 430-
    Abstract: This study is devoted to the synthesis of King Orange peel essential oil in water nanoemulsions combined with nanosilver by ultrasonic method supported by mechanical stirring for antibacterial application. The samples were characterized by Gas chromatography-mass spectrometry (GC-MS), Ultraviolet–visible (UV-Vis), Transmission electron microscopy (TEM), and Dynamic light scattering (DLS) methods. According to the above-experimental results, it was found that the emulsions based on orange essential oil (without nanosilver) and the ones combined with nanosilver have the average particle size from 66.2 nm and 42.9 nm, respectively. The obtained nanoemulsions were also tested to examine their antibacterial ability against Escherichia coli (E. coli) by the disc diffusion method. It has been also found that nanoemulsions based on orange essential oil supported by nanosilver have the superior antibacterial ability, compared with individual components of the materials.
    Type of Medium: Online Resource
    ISSN: 2460-1578 , 1411-9420
    Language: Unknown
    Publisher: Universitas Gadjah Mada
    Publication Date: 2020
    detail.hit.zdb_id: 3069950-2
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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