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RISS 인기검색어
- 검색키워드
- 저자 : Teerarak, Montinee (검색결과 3 건)
- 무료
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Nipaporn Yonsawad,Montinee Teerarak 한국원예학회 2019 원예과학기술지 Vol.37 No.1
Cut leaves of Philodendron sp. (philodendron plu jeeb) are often used in bouquets and flower arrangements. Keeping quality is a key criterion for assessing the value of a cut leaf, by growers, traders, and consumers alike. This study set out to determine the influence of the essential oils of Eucalyptus globulus Labill. (eucalyptus) and Cymbopogon nardus Rendle (citronella) on the vase life of cut leaves of the philodendron plu jeeb. Vase life was assessed in terms of relative fresh weight, electrolyte leakage, pigment content, hydrogen peroxide accumulation, and antioxidant activity. Philodendron plu jeeb petioles were treated with preservative vase solutions of distilled water and 12.5 μg·mL<SUP>-1</SUP> eucalyptus essential oil, 25 μg·mL<SUP>-1</SUP> eucalyptus essential oil, 12.5 μg·mL<SUP>-1</SUP> citronella essential oil, and 25 μg·mL<SUP>-1</SUP> citronella essential oil. Cut leaves were held at room temperature (c. 30°C) in daylight and with natural ventilation. Eucalyptus essential oil at 12.5 μg·mL<SUP>-1</SUP> in the vase solution significantly increased leaf vase life and helped maintain relative fresh weight. The essential oils had positive effects on the retention of membrane integrity and antioxidant activity (DPPH radical scavenging assay). They also had inhibitory effects on hydrogen peroxide accumulation and on chlorophyll and carotenoid degradation. The results indicate that 12.5 μg·mL<SUP>-1</SUP> eucalyptus essential oil has potential as a vase-life extender for cut leaves of the philodendron plu jeeb.
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Laosinwattana, Chamroon,Boonleom, Chaninat,Teerarak, Montinee,Thitavasanta, Sompop,Charoenying, Patchanee The Korean Society of Weed Science and The Turfgra 2010 Weed Biology and Management Vol.10 No.3
This experiment was conducted to determine the potential allelopathic effects of the aqueous extracts and dried leaf powder of Suregada multiflorum and to find the herbicidal effects of its granule on the weed species, barnyardgrass (Echinochloa crus-galli) and slender amaranth (Amaranthus viridis), in various growth media (germination paper, sand, and soil). Observations in this study demonstrated that the potential and magnitude of their inhibitory effects varied among the plant parts. The leaves and branches possessed the strongest inhibition levels, followed by the bark. The aqueous extract from the leaves of S. multiflorum had a remarkably stronger inhibitory effect on the germination and growth of slender amaranth, compared with barnyardgrass; when applied at the concentration of 100 $g\;L^{-1}$, it completely inhibited the germination and initial seedling growth of slender amaranth. In addition, all the treatments of the dried leaf powder had stronger inhibition effects than the aqueous extract. Interestingly, the inhibitory effects of the dried leaf granule of S. multiflorum were stronger than the effects of the dried leaf powder at equal rates. The degree of inhibitory effect of the S. multiflorum granule, applied in various growing media, can be classified in order of decreasing inhibition as germination paper = sand > clay soil. The present study indicates that the S. multiflorum granule product that was developed in this research has the potential to provide a powerful organic herbicide for controlling slender amaranth.
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Nguyen, Tuyen Thi Kim,Laosinwattana, Chamroon,Teerarak, Montinee,Pilasombut, Komkhae Asian Australasian Association of Animal Productio 2017 Animal Bioscience Vol.30 No.9
Objective: This study investigated the effect of extraction solvents on antioxidant bio-active compounds as well as potential antioxidant and lipid peroxidation inhibition of Phyllanthus acidus (P. acidus) leaf extract in minced pork. Methods: The effect of various solvent systems of water, 25%, 50%, 75% (v/v) ethanol in water and absolute ethanol on the extraction crude yield, total phenolic content, total flavonoid content and in vitro antioxidant activities of P. acidus leaves was determined. In addition, antioxidant activities of the addition of crude extract from P. aciuds leaves at 2.5 and 5 g/kg in minced pork on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical cation decolorization, reducing power and inhibition of lipid peroxidation (thiobarbituric acid reactive substances; TBARS) were determined. Moreover, sensory evaluation of the samples was undertaken by using a 7-point hedonic scale. Results: The results showed that the highest crude yield (2.8 g/100 g dry weight) was obtained from water which also had the highest recovery yield for total phenolic content, total flavonoid content and the strongest antioxidant activity. The addition of crude water extract from P. acidus leaves was more effective in retarding lipid peroxidation and higher antioxidant activity than control and butylated hydroxytoluene in minced pork. In particular, the samples containing P. acidus extract had no significant effect on the sensory scores of overall appearance, color, odor, texture, flavor, and overall acceptability compared to the control. Conclusion: Water solvent was an optimally appropriate solvent for P. acidus leaf extraction because of its ability to yield the highest amount of bio-active compounds and in vitro antioxidant property. Particularly, P. acidus crude water extract also strongly expressed the capacity to retard lipid oxidation, radical scavenging, radical cation decolorization and reducing power in minced pork. The results of this study indicated that P. acidus leaf extract could be used as natural antioxidant in the pork industry.
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