تهدف هذه الدراسة إلى تحديد المحتوى الكلي من الفلافونيدات في المستخلصات المائية، و الكحولية المائية لأوراق و أزهار الزعرور البري الجافة و الطازجة، إذ استخدمت طريقة النقع على البارد و الساخن لتحضير هذه المستخلصات و تم الكشف عن المركبات الفعالة الموجودة في هذه المستخلصات عن طريق إجراء تفاعلات كيميائية عدة.
أظهرت نتائج هذه الدراسة احتواء المستخلصات على: االفينولات، الفلافونيدات، الصابونينات، أما الكمية الكلية من الفلافونيدات في المستخلصات فقد حددت بالطريقة الطيفية الضوئية في المجال المرئي عن طريق تشكيل معقد مع كلوريد الألمنيوم و قياس الامتصاصية عند طول موجة 510nm و تبين أن كمية الفلافونيدات في العينات المجففة تتراوح بين 0.16-1 % بينما كميتها في العينات الطازجة كانت بين 0.026-0.18%.
This study was carried out to determine the total content of flavonoids of dried and
fresh hawthorn flowers and leaves in water and hydroalcolic extracts. The method of cold
and hot maceration was used to prepare these extracts. The active compounds which were
found in these extracts were detected by many chemical reactions. The results of these tests
showed that the extracts contain: phenols, flavonoids, and saponins.The total content of
flavonoids was determined using spectrophotometric methods by forming complex with
aluminum chloride and measurement absorbance at 510nm, it has been shown that quantity
of flavonoids in dried samples ranges from 0.16 to 1%, while it's quantity in fresh samples
0.026- 0.18%.
References used
KUMAR, D; ARIA, V; BHAT, Z. A; KHAN, N. A; PRASAD, D. N. The genus Crataeguse: chemical and pharmacological perspectives. Brazilian journal of pharmacognosy, ISSN 0102-695X, 2012, 14
MATOES, R. G. Antioxidant compounds in hawthorn fruits (Crataegus spp.) of Mexico. Revista Mexicana de biodiversidad, 84, 2013, 1298-1304
TASSEL,C.M; KINGSTON, R; GILROY, D; LEHANE, M; FUREY, A. Hawthorn (crataegus spp. ) in the treatment of cardiovascular disease. Pharmacogn Rev 4(7) , 2010, 32-41, 11
Ten medicinal plants were chosen from various plants in Syria which
used as spices or cooked and Syria traditional medicine. Their names
Rosemary, Damask rose, Chamomile, Sumac, Silver linden, Black
cumin, Thyme, Mint, Laurel and lemon balm.
Mois
Total polyphenols (TP), total flavonoids (TF) and (-)-epigallocatechin gallate
((-)-EGCG) were determined in five commercial tea infusions by continuous
infusion method, using the ratio 20g of tea to 1L of water at 85±5 °C and
brewing time between 5-180 min.
The aim of this study was to estimate the total amount of phenolic compounds of olive
trees leaves (Olea europaea L.) as Biomarker for the assessment of lead air pollution at
Banias area. Olive trees were selected as the predominant species in the
Total Polyphenol was studied in olive leaves collected from Lattakia area
(AlQurdaha zone), where Phenolic compounds were extracted from dry Olive leaves by
using two extraction methods: maceration and Ultrasonic Device. By the both two methods
a
Black tea which contains polyphenol is important for health benefits and it is
considered as antioxidant contents .
The extraction parameters, time and temperature and kind of solvent extraction, can
Influence the polyphenol concentrations of Blac