Luksamee Vittaya

• PhD (Chemistry)
• Lecturer & Researcher at Rajamangala University of Technology Srivijaya

A new macrocyclic lactone, 12-hydroxycorniculatolide A (1), along with three known compounds, corniculatolide A (2), 12-hydroxy-11-O-methylcorniculatolide A (3) and 6,7-dimethoxycoumarin (4) were isolated from the methanolic extract of the twigs of Lumnitzera littorea. All compounds were characterized using spectroscopic methods. All compounds were...

Som Kung, locally known as wild grape, belongs to the Vitaceae family and its scientific name is Ampelocissus martini. Its leaf, root and bark are used in traditional Thai medicine for providing relief of symptoms. In this work we studied the phytochemical and antioxidant activities of the hexane, ethyl acetate and methanol crude extracts of vines...

Ampelocissus martini Planch., an edible plant belonging to the Vitaceae family, is used in traditional medicine to cure certain conditions. However, the biological activities of the vine and rhizome extracts of A. martini have not been investigated; hence, the objective of this work was to extract and investigate the bioactive substances of the vin...

The identification of active natural compounds from plants for use as therapeutic agents for aquatic diseases could reduce the use of environmentally harmful chemicals. Lumnitzera littorea is a plant in the Combretaceae family that thrives among mangroves. Although well known in traditional medicine, there are only a few reports of the activity of...

An azoimine compound, 5-chloro-2-(phenylazo)pyridine (Clazpy), reacted with Ni(II) and Zn(II) sulphate salts and formed divalent metal complexes with a general formula of [M(Clazpy)2(NCS)2], where M is Ni(II) or Zn(II). The synthesized complexes were characterized on the basis of elemental analysis, nuclear magnetic resonance, and infrared and elec...

Zinc oxide nanoparticles (ZnO NPs) were prepared by co‐precipitation of zinc acetate with Ampelocissus martini rhizome extract (AM). Four conformations of ZnO NPs were obtained by conjoined precipitation of sodium hydroxide, zinc acetate dihydrate, and AM: ZnO NPs‐01, ZnO NPs‐02, ZnO NPs‐03, and ZnO NPs‐04. The structure of ZnO NPs was confirmed by...

Brittle wort (Chara corallina), a widespread freshwater green macroalga found in southern Thailand, is one of the most widely consumed edible species. Recently, many studies revealed potential of freshwater algae for use as a dietary supplement. This study aimed to screen the phytochemicals and assess the biological activity of C. corallina as an a...

Derris indica (Leguminosae) has been used in folk medicine to treat ulcers, bronchitis, coughing, whooping cough, and diabetes and has also been used pharmacologically for its anti-inflammatory, antimicrobial, antidiabetic, and anticancer activities. Fifteen extracts from leaf, flower, fruit, twig, and bark of D. indica were investigated by standar...

Calophyllum inophyllum is used in traditional medicine to treat several diseases and conditions. Several studies have attempted to isolate useful compounds from various parts of this plant. However, the phytochemical constituents of C. inophyllum flower have not been extensively studied. This pioneering study focused on the chemical composition of...

Mangrove plants are the source of various secondary bioactive metabolites and have been used in traditional medicine for many diseases. This study aimed to investigate bioactive phytochemical components of two mangrove plants, Rhizophora mucronate and Rhizophora apiculata in the Rhizophoraceae family. Eight extracts of four parts (pod, leaf, twig,...

Importance of the work: Various parts of Derris indica have been used in the Ayurvedic and Unani systems of medicine with antiinflammatory, antiplasmodial, antinociceptive, antihyperglycaemic, antilipid oxidative, antidiarrheal, antihyperammonemia and antioxidant properties, and for the treatment of liver disorders. However, there are no scientific...

Bruguiera cylindrica is a mangrove plant in the Rhizophoraceae family which founded in tropical regions. The dried samples of bark, leaf, pod and twig of B. cylindrica were collected and were macerated with methanol. Crude extract of each parts was determined the phytochemical screening and antibacterial activity with the aquatic pathogenic bacteri...

Phytochemical screening is an important procedure forthe isolation of new compounds. This research aimed to screen phytochemicals in leaves, flowers and fruits of Melaleuca leucadendra and Syzygium cinerea which belong to the family Myrtaceae. Extracts of the plant material were prepared using various solvents in the order of their polarity, includ...

A novel organometallic ruthenium (II)-p-cymene complex,[Ru (η 6-p-cymene)(ptu) 2 Cl] SH, where ptu= N-phenylthiourea, was synthesized. Its structure was characterized by single crystal x-ray diffraction, elemental analysis and spectroscopic techniques (1 H-NMR and FTIR). The geometrical structure of the complex was tetrahedral, distorted by η 6 π-b...

The present study is aimed to study and determine the total phenolic content, the metal chelation and the antioxidant activity of the extracts of Rhizophora apiculata bark and leaf from the organic solvents which were hexane, ethyl acetate and methanol. The total phenolic contents of six extracts were analyzed by the Folin-ciocateu colorimetric met...

Caulerparacemosa var. corynephora, the beneficial green alga generally found along the seashore of the Andaman Sea, was collected form the coastal area of Trang province, Thailand. This marine seaweed was extracted with six different solvents, namely hexane, dichloromethane, ethyl acetate, methanol, ethanol and water. Afterward, all crude extracts...

Baliospermum solanifolium (Burm.) Suresh is an important medicinal plant in the Euphorbiaceae family but the correlation between its phenolic content and antioxidant activity has not been closely investigated. Its stems and leaves were extracted according to polarity of hexane, ethyl acetate and methanol. The preliminary phytochemical screening of...

Rhizophora apiculata is a traditional mangrove plant belonging to RHIZOPHORACEAE family. Leaves and bark of this plant were extracted with sequential increasing polarity of organic solvents: hexane, ethyl acetate, and methanol, respectively. All six extracted were studied on antibacterial activity with four bacterial strains (Bacillus cereus TISTR...

The structure of the title complex, [ZnCl2(C11H9N3)2], comprises two 2-(phenyl­diazen­yl)pyridine ligands coordin­ating to a central ZnII dichloride unit via the pyridyl N-atom donors, resulting in a slightly distorted tetra­hedral geometry. The complex exhibits twofold rotation symmetry, with the rotation axis bis­ecting the zinc cation. The struc...

Ceriops tagal is a mangrove plant in RHIZOPHORACEAE family which plays an importance role in coastal ecological balance and exhibit versatile pharmacological area. In this study, leaves and barks were collected from Rajamangala beach, Rajamangala University of Technology Srivijaya, Trang province and were dried to successively extract with hexane,...

In the title complex, [Fe(NCS)2(C11H8ClN3)2], the FeII atom is coordinated by two N atoms from the thio­cyanate ligands and four N atoms from two chelating 5-chloro-2-(phenyl­diazen­yl)pyridine ligands, generating a fairly regular FeN6 octa­hedral coordination geometry. The thio­cyanate ions are in a cis disposition and the pyridine N atoms are in...

Investigated antimicrobial activity (E. coli TISTR 780 B. cereus TISTR 687 S. aureus TISTR 1466 and Samonella typhimurium TISTR 292) of leaves, bark and stem crude extracts from Ficus hispida Linn with hexane ethyl acetate and methanol, respectively, by disc diffusion method showed strong inhibition from hexane and ethyl acetate crude extracts more...

The aim of this research is to synthesize and characterize a new bidentate ligand, 4,6-dimethyl2-(phenylazo)pyrimidine (dmazpym) ligand. Its structure is similar to 2-(phenylazo)pyridine (azpy). The dmazpym ligand was synthesized by condensing 2-amino-4,6-dimethylpyrimidine with nitrosobenzene in the presence of sodium hydroxide and benzene was use...

For the past several years, the chemistry of transition-metal complexes with azoimine ligands has been extensively studied because of their strong π-acceptor properties to stabilize metal ions having lower oxidation states. Among this type of ligand, 2-(phenylazo)pyridine (azpy) with ruthenium complexes, [Ru(azpy)2Cl2], were synthesized; they showe...

Sahavisit, L. and Hansongnern, K. Synthesis, spectral studies and electrochemical properties of ruthenium(II) complex with the new bidentate ligand 5-Chloro-2-(phenylazo)pyridine Songklanakarin J. Sci. Technol., Dec. 2005, 27(Suppl. 3) : 751-759 5-Chloro-2-(phenylazo)pyridine (Clazpy) was synthesized as a new bidentate ligand, containing an azo moi...