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UPV Theses and Dissertations

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1994 - 199922000 - 20021

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Committee Member: search.filters.committeemember.Gacutan, Ma. VicentaSDG: search.filters.sdg.SDG 15 - Life on land

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    A preliminary investigation on the antimicrobial activity of Luffa cylindrica (Patola) leaf extract
    Benjamin, Paulette E. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2002-04)
    Four concentrations were prepared (100%, 75%, 50%, and 25%) from the Patola (Luffa cylindrical) leaf extract. Positive and negative controls were made in order to have a basis for comparison with the other four Patola leaf extract concentrations. Negative controls were purely sterilized distilled water, while the positive controls used were Amoxicillin for bacteria and Mycostatin for Candida albicans. The effectiviness of these concentrations was tested on the growth of the five selected microorganisms, namely: Staphylococcus aureus, S. epidermidis, S. saprophyticus, C. albicans and Microsporum canis. M. canis did not exhibit any growth and had no significant difference. Patola was found to inhibit the growth of S. aureus, S. epidermidis and S. saprophyticus at 100% concentration. Patola leaf concentration of 75% weakly inhibited the growth of S. epidermidis and S. aureus. Concentrations of 50%, and 25% showed negative inhibitory activity. Candida albicans in all four concentrations showed negative inhibitory activities. The minimum inhibitory activity that was able to inhibit bacterial growth was at 75% leaf extract concentration.
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    Historical analysis of Hippeatrum puniceum (Var) Lam.
    Bañas, Shirlyn L. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1996-03)
    A histochemical study Hipppeastrum puniceum, a bulbous plant of Family Amaryllidaceae, was performed to screen the plant for the presence of medically important substances that could be responsible for its curative powers. Results of the analyses showed that the leaf reacted positively to tests for presence of aldehydes, alkaloids, amygdalin, and arbutin; the roots tested positive for aldehydes, alkaloids, amygdalin, lecithin, oxalic acid, saponins, and tartaric acid. The bulb had aldehydes, alkaloids, amygdalin, arbutin, lecithin, saponins and tannins. On the other hand, the leaf, root, and bulb yielded negative results in the tests for presence of presence of citric acid, formic acid, lignin, and phytosterol.
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    A historical analysis of Pintado (Euphorbia heterophylla)
    Alcarde, Annabelle Z. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1994-03)
    A histochemical study on Euphorbia heterophylla, a shrubby plant of the Family Euphorbiaceae was performed to screen the plant for the presence of medically important substances that could be responsible for its curative powers. Results of the analysis showed that aldehydes are highly detectable in the stem (xylem and phloem); moderately detectable in the leaf (xylem), stem (epidermis and vascular cambium), root (phloem) and flower (ovary); and slightly detectable in the flower (calyx). Alkaloids are moderately detectable in the stem (xylem, vascular cambium, and phloem) and slightly detectable in the leaf (xylem, vascular cambium, epidermis, and phloem). Amygdalin is highly detectable in the leaf (xylem) and stem (epidermis); moderately detectable in the root (phloem), and fruit (seed and pericarp); and slightly detectable in the root (xylem) and the flower (ovary). Arbutin is highly detectable in the xylem of the leaf and pericarp of the fruit; moderately detectable in the phloem of the leaf and vascular cambium of the stem; and slightly detectable in the stem (xylem, phloem, and epidermis), root (xylem), and flower (ovary). Saponins are highly detectable in the leaf (xylem, phloem, and epidermis), (xylem), root (xylem and phloem), flower (calyx and ovary) and fruit (seed). Formic acid is moderately detectable in the leaf and stem (epidermis), and slightly detectable in the stem and root (xylem). Oxalic acid is slightly detectable in the stem (phloem). Tannins are highly detectable in the stem (xylem and phloem) and fruit (pericarp); moderately detectable in the leaf (xylem and phloem) and fruit (seed); and slightly detectable in the stem (epidermis).