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1. Temporal Variation on Chemical Composition, Anti-inflammatory and Antioxidant Activities of the Essential Oils of Thymus sibthorpii Benth. (Lamiaceae) Growing Wild in Kilkis (Northern Greece)
Olga St. Tsiftsoglou, Nikos Krigas, Dimitra Hadjipavlou-Litina, Diamanto Lazari
Stinging nettle (Urtica dioica L, Urticaceae) ecologically benign, grow as a weed plant widespread in the world, predominantly in wasteland areas with characteristically unpleasant stinging hairs on the stems and leaves is characterized by important economical potentials. This perennial plant grows to between 1-3 m tall with dark green leaves in an opposite pattern that are oval to heart shaped and saw-toothed and are sparsely covered with stinging hairs. Leaves are simple (i.e., lobed or unlobed but   not separated into leaflets), opposite, coarsely toothed and there are two or more ways to evenly divide the flower i.e., the flower is radially symmetrical, lamina is 1.5-20 cm long and 0.6-12 cm broad. Propagation of nettle can either take place by seed or vegetative by divisions. The compounds responsible for burning sensation properties of leave’s trichomes are acetylcholine, histamine, serotonin (5-hydroxytryptamine) and formic acid. The high nutritive values caused stinging nettle leaves to be included in the human consumption, as a tonic for strengthening the body, in the preparation of soups and various dishes and as a natural source of food favouring. This herb, which is known for its therapeutic and healing properties also has several side effects such as affects blood regularity, lowers the blood pressure level, insomnia and drowsiness, stomach discomfort, severe allergic reactions etc. Therefore, the present studies revealed that the plant has wild adaptability with effective pharmacological action and has proven its potential for future research for several biological potential.

2. Formulation of Cosmetics Using Extract of Teak Leaves (Tectona grandis) as a Colourant
Koliyote S. G., Ayare S. A.
Beautification of skin and hair by dyeing it or by colouring lips, cheeks and eyes, have been a part of our living since ages. So, to avail this purpose, large number of shades were manufactured using chemicals, but their frequent use showed allergies and eczema. This led to extraction and use of natural colorants. Thus, this project is about formulation and evaluation of herbal cosmetics- lip balm and shampoo, with the herbal ingredient being, colour extract obtained from dried leaves of Tectona grandis (Teak wood). The dye was extracted from the leaf powder by using maceration. The concentrated extract was subjected to solubility tests, UV-visible, TLC and phytochemical analysis. Lip balm was characterized for stability studies like organoleptic characters, melting point, water resistance, whereas shampoo was subjected to tests like rheological studies, bioassay, cleansing action. The concentrated extract showed good solubility and colour as hydro-alcoholic solution and was thus used in both the formulations. UV spectra and TLC showed presence of anthocyanin in hydro-alcoholic solution. Finest lip balm was formed after triturating the colorant with the waxy base. It showed stability at room temperature and in refrigerator and a melting point around 500C. The shampoo showed good results for stability, foam stability and bioassay, and solid content in the range of 16% -18%. Hence, a good aqueous and lipid-based cosmetic can be formulated by replacing synthetic colour with teak leaves extract, which can produce different shades of colours, from light orange to dark brown.

International Journal of Pharmacognosy and Phytochemical Research