Background & Aim: Lavandula officinalis is one of great importance due to its aromatic compounds and medicinal uses but not many studies have been done on the antioxidant power of different plant organs.Experimental: Antioxidant ability of Lavender leaves, flowers, seeds and essential oil based on inhibition of free radicals and nitric oxide, inhibition of linoleic acid peroxidation by ferric thiocyanate and inhibition of malondialdehyde by thiobarbituric acid in compare with synthetic antioxidants Butyl Hydroxy Toluene (BHT) and Butyl Hydroxy Anisole (BHA) were measured.Results: The phenolic and flavonoid content of the leaf was 96.49±6.35 (µg gallic acid per mg dry weight of the extract) and 39.97±3.36 (µg of catechins per mg dry weight of the extract) respectively, more than other samples. In the study of antioxidant power, plant leaf extract with 48.66±5.5 μg was able to inhibit 50% of DPPH radicals, which had a weaker ability than synthetic antioxidants. The leaf extract of the plant had a higher ability than the synthetic antioxidant BHA to inhibit nitric oxide radicals and its ability was as high as BHT. The ability to inhibit the linoleic acid peroxidation of leaf and flower extracts at the beginning of the functional test showed similar BHT and BHA, at the end, the ability of leaf extract was stronger than BHA and weaker than BHT. The inhibitory potential of malondialdehyde leaf extract (82.66±1.5%) was better than BHA and weaker than BHT. Pearson correlation coefficients between phenolic content and antioxidant capacity of samples were high. Examination of leaf essential oil using GC-MS technique showed the presence of phenolic compounds in the plant.Recommended applications/industries: Due to the dangers of synthetic antioxidants in the food industry, the results of this study could introduce another application of this plant in terms of strong antioxidant properties. تفاصيل المقالة

Background and aim: From long time ago, traditional medicine was integrated with popular culture and various aspects of treatment have been allocated to it. At the present time, the use rate of this method depends on people’s belief and recognition. Experimental: The research was conducted in the region Mobarakeh, Iran, in order to identify the priorities for application of medicinal plants by indigenous people. Results & Discussion: The results showed the more use of plants is in the field of gastrointestinal problems with frequency 17% and 53 used plant species. About 20 plant species were used for relieving diarrhea by indigenous people. Application frequency of effective plants on skin and hair was about 14% which eight plant species from 32 species were used for removing facial burble. Frequency of use as anti-inflammatory and anti-infection was about 11 % with 12 plant species. Frequency of effective application on circulatory system was 9% (eight medicinal plants). Frequency of use as urinary tract and kidneys was about 8% with 12 herb species. Effective applications of plants on endocrine problems, neurological problems and respiratory problems were seven, six and five percent. Medicinal plants also the effect on oral, dental and muscle problems respectively were three and two percent respectively. Industrial and practical recommendations: Examinations showed that most use of medicinal plants in the area is to remove ​​digestive problems. Also, awareness of these applications can be a policy for obtaining the new drug applications of these plants which has never been reported in available sources. تفاصيل المقالة