oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Antioxidant and antimicrobial activity of Alpinia officinarum  [cached]
Srividya A,Dhanabal S,Misra V,Suja G
Indian Journal of Pharmaceutical Sciences , 2010,
Abstract: Alpinia officinarum is a rhizome belonging to the family zingeberaeceae. Hydro alcoholic extract by hot and cold maceration and methanol extract by percolation process Qualitative phytochemical analysis of extract of Alpinia officinarum rhizome showed a majority of the compound including tannins, alkaloids, flavonoids and saponins. Hydroalcoholic extract prepared by hot maceration process was found to contain more phenol and flavonol and it was measured as 50.1 mg/g and 54.02 mg/g, respectively. All the three extracts showed moderate to potent antimicrobial activity against the Bacillus cereus, Staphylococcus aureas, Pseudomonas auroginosa, Escherichia coli. None of the extracts showed antifungal activity against Aspergillus niger and Candida albicans. All the three extracts showed a concentration dependent radical scavenging activity by inhibiting diphenylpicrylhydrazyl free radical at the same time hydroalcoholic extract prepared by hot maceration process showed better reducing and total antioxidant activity.
Molecular Identification of Alpinia Officinarum and Its Adulterants
高良姜及其混淆品的分子鉴定

Luo Kun,Chen Keli,Liu Yimei,Yao Hui,Han Jianping,Ma Pei,Sun Chao,
罗 焜
,陈科力,刘义梅,姚 辉,韩建平,马 培,孙 超

世界科学技术-中医药现代化 , 2011,
Abstract: This study aimed to discriminate Alpinia officinarum and its adulterants using ITS2 sequence.DNA samples were extracted from Alpiniae specimens.The ITS2 sequence was amplified by PCR and sequenced bidirectionally.Sequences were assembled by CodonCode Aligner.The intra-specific and inter-specific K2P distances of Alpinia officinarum and its adulterants were calculated.And the N-J tree was constructed by MEGA V 4.1.The ITS2 secondary structure was predicted.The results showed that the maximum intra-specific K2P distance was 0.0171,while the minimum inter-specific K2P distance was 0.0469.Different samples of Alpinia officinarum were clustered.And the N-J tree was able to distinguish Alpinia officinarum from its adulterants.The Alpinia officinarum was obviously differentiated from its adulterants by the ITS2 secondary structure.It was concluded that ITS2 sequence was able to identify Alpinia officinarum and its adulterants.It was an efficient molecular identification method for Alpinia officinarum and its adulterants.
The Effect of Dietary Alpinia officinarum (Hance) Supplementation in Bovns-type Chicks  [PDF]
Mawahib Seddeag,Gadallah Madawe,S.M.A. El Badwi,A.O. Bakhiet
International Journal of Poultry Science , 2010,
Abstract: The galangal (the rhizome of Alpinia officinarum, Hance) is popular as a traditional herbal medicine. The present study investigates the effect of diet containing 2%, 5% and 10 % of A. officinarum (Hance) on the biochemical, haematological and histological parameters in Bovans-type chicks treated for 4 weeks. The body weight of the chicks revealed that feeding levels of 2, 5 and 10% dietary A. officinarum was significantly decreased (p<0.05 - 0.01) compared to the control chicks. Significant changes were observed in the activities of AST and ALT and the concentration of total protein, uric acid, albumin and globulin and cholesterol levels. Mild degenerative changes were observed in the liver and kidneys of chicks while no significant differences were recorded in haematological parameters.
Performance of Rabbits Fed Diets Containing Different Levels of Energy and Lesser Galangal (Alpinia Officinarum)  [cached]
Sh. A. M. Ibrahim,H. A. A. Omer,Ali F. A. F.,El-Mallah El-Mallah G. M.
Journal of Agricultural Science , 2011, DOI: 10.5539/jas.v3n4p241
Abstract: This work aimed to study the effect of two different levels of ration energy supplemented with Alpinia officinarum. Rabbits were classified into six equal groups (G1-G6). The 1st and 4th groups received basal ration with 100 % and 90 % energy requirement and served as first and second control respectively. The 2nd and the 3rd groups received basal ration with 100 % energy requirement supplemented with Alpinia officinarum at the level of 0.5 and 1.0 %, respectively. The 5th and 6th groups received basal ration with 90 % energy requirement with Alpinia officinarum at the level of 0.5 and 1.0 %, respectively. The 90% energy containing diet showed significant increased (P<0.05) in DM and CF digestibility, while EE digestibility was significantly (P<0.05) decreased. Lesser galangal as feed additives showed significant (P<0.05) increased in DM, OM, CF, NFE digestibility and TDN value. There were significant interaction values between energy and supplementation levels on digestibility coefficient of DM, OM, CF, EE, NFE and TDN value. Supplementation of Lesser galangal at 0.5 % or 1% significantly increased final body weight gain, ADG, feed conversion, while slightly decreased feed intake. The 90% energy and 1% lesser galangal (G6) recorded the best values of final body weight, body daily weight gain and feed conversion. The interaction values between energy and lesser galangal levels significantly increased (P<0.05) the carcass weight, dressing percentages and carcass cuts. The 90% energy and 1% lesser galangal (G6) recorded the best values of carcass weight, dressing percentages and carcass cuts. Lesser galangal significantly (P<0.05) decreased the lungs (weight and % of SW); content of stomach and empty of small intestine (weight and % of SW). The interaction values between energy and lesser galangal levels significantly (P<0.05) increased the liver and total internal offal's (% of SW); lungs, full and content of stomach as well as digestive tract content (weight, g and % of SW). Dietary 90% energy requirements with 0.5 % or 1% lesser galangal showed the high values of net revenue, economical efficiency and relative economic efficiency, while recorded the low value of feed cost/ kg live body weight (LE). Rabbits received the 90 % energy requirement with 0.5 % lesser galangal recorded the highest value of relative economic efficiency (111.4%) and the lowest value of feed cost/ kg live body weight (5.45 LE).
Chemical composition and antioxidant properties of the essential oil and methanol extracts of rhizoma Alpinia officinarum from China in vitro
J Zhang, J Dou, S Zhang, Q Liang, Q Meng
African Journal of Biotechnology , 2010,
Abstract: This study was designed to examine the in vitro antioxidant activities of the essential oil and methanol extracts of rhizoma Alpinia officinarum (small galanga) from China. The essential oil was analyzed by gas chromatography/ mass spectrometry (GC/MS) and 46 constituents were identified. Methanol extract from rhizoma A. officinarum was fractionated by chromatography of silica gel using ethyl acetate, acetone-methanol (8:1, V/V) and methanol, respectively. The antioxidant activities of essential oil and methanol extracts were evaluated with reducing power, diphenylpicrylhydrazyl (DPPH) assay and ferric thiocyanate test. In the above three assays, the essential oil and methanol extracts showed antioxidant potential to varying degrees; and acetone-methanol (8:1, V/V) subfraction exhibited better antioxidant potency than others. Owing to having antioxidative components, the essential oil exhibited satisfying antioxidant activities. A positive correlation was observed between the antioxidant activity potential and total phenolic contents of the extracts.
Chemical composition and antioxidant properties of the essential oil and methanol extracts of rhizoma Alpinia officinarum from China in vitro
J Zhang, J Dou, S Zhang, Q Liang, Q Meng
African Journal of Biotechnology , 2010,
Abstract: This study was designed to examine the in vitro antioxidant activities of the essential oil and methanol extracts of rhizoma Alpinia officinarum (small galanga) from China. The essential oil was analyzed by gas chromatography/ mass spectrometry (GC/MS) and 46 constituents were identified. Methanol extract from rhizoma A. officinarum was fractionated by chromatography of silica gel using ethyl acetate, acetonemethanol (8:1, V/V) and methanol, respectively. The antioxidant activities of essential oil and methanol extracts were evaluated with reducing power, diphenylpicrylhydrazyl (DPPH) assay and ferric thiocyanate test. In the above three assays, the essential oil and methanol extracts showed antioxidant potential to varying degrees; and acetone-methanol (8:1, V/V) subfraction exhibited better antioxidant potency than others. Owing to having antioxidative components, the essential oil exhibited satisfying antioxidant activities. A positive correlation was observed between the antioxidant activity potential and total phenolic contents of the extracts.
Rapid in vitro Micropropagation of Alpinia officinarum Hance, An Important Medicinal Plant, Through Rhizome Bud Explants  [PDF]
Chinnasamy Selvakkumar,Arun Balakrishnan,Baddireddi Subhadra Lakshmi
Asian Journal of Plant Sciences , 2007,
Abstract: An efficient multiple shoot has been developed for the medicinal plant Alpinia officinarum Hance (Zingiberaceae) using rhizome buds as explants. Multiple shoots originated when the rhizome buds were cultured on Murashige and Skoog (MS) medium supplemented with different concentrations and combinations of growth regulators. Optimum shoot multiplication was observed on MS medium containing 3% (W/V) sucrose and 3.0 mg L-1 kinetin (Kn) and 1.0 mg L-1 Naphthalene Acetic Acid (NAA). Each rhizome bud gave rise to an average of 11 shoots per explant. Rooting experiments with half-strength Murashige and Skoog medium revealed that 0.5 mg L-1 Indole-3-butyric acid (IBA) was more suitable for root induction when compared to IAA and NAA. Healthy in vitro rooting plantlets were transferred to pots containing a mixture of vermiculite and soil (1:1) for acclimatization for a period of three-four weeks and 93% of plantlets survived under field conditions.
Chemical Composition, Proapoptotic and Antiosteoporosis Activities of the Essential Oil from the Aerial Part of Alpinia officinarum Hance  [PDF]
Yang Wang, Ji Chen, Keda Zhang, Weigang Wu, Lanlan Ge, Haoqiang Wan, Jiemei Li, Jun Tian, Xiaobin Zeng
Chinese Medicine (CM) , 2018, DOI: 10.4236/cm.2018.93009
Abstract: Background: Alpinia officinarum Hance is valued as an edible medicinal plant. The rhizome is widely reported to have anticancer activity whereas little information is available on the aerial part. This study investigates chemical composition, proapoptotic and anti-osteoporosis activities of essential oil from aerial parts of A. officinarum (APEO). Methods: In this study, APEO was extracted by hydrodistillation and analyzed using GC-MS. The inhibitive activity of 0 - 2.5 μL/mL. APEO was investigated using MTT assay, while in vivo effect was evaluated in nude mice. The cell cycle, apoptosis, Δψm and expression of proteins analyses influenced by 0 - 0.313 μL/mL APEO were detected by PI, Annexin V/PI, JC-1, and Western blot, respectively. Alkaline phosphatase activity and mineralized nodules formation of rat osteoblasts with 0 - 0.156 μL/mL APEO were assayed using colorimetric method and alizarin red staining, respectively. Results: Total 45 constituents were identified accounting for 91.1% of APEO (sesquiterpene hydrocarbons for 44.4%). APEO significantly inhibited cancer cells growth in a dose-dependent
Therapeutic value of the genus Alpinia, Zingiberaceae
Victório, Cristiane P.;
Revista Brasileira de Farmacognosia , 2011, DOI: 10.1590/S0102-695X2011005000025
Abstract: plants containing bioactive substances have increasingly become the object of research studies, particularly those plants with therapeutic value. many species of the genus alpinia provide a variety of medicinal properties, such as, alpinia zerumbet (pers.) burtt et smith and a. purpurata (vieill) k. schum, which have a significant presence in brazil. these species have been commercialized in the food and cosmetic industries. however, their greatest importance arises from the medicinal properties of their essential oils containing flavonoids, terpenoids and kavalactones which have been used in folk medicine to treat, for example, arterial hypertension and inflammatory processes. in addition, such species are also used in multidisciplinary studies, including phytochemistry, ethnobotany and biology, indicating the key pharmacological role of this genus in everyday life. therefore, this work aims to present a bibliographic review of the genus alpinia and its significance in therapeutic applications.
Therapeutic value of the genus Alpinia, Zingiberaceae  [cached]
Cristiane P. Victório
Revista Brasileira de Farmacognosia , 2011,
Abstract: Plants containing bioactive substances have increasingly become the object of research studies, particularly those plants with therapeutic value. Many species of the genus Alpinia provide a variety of medicinal properties, such as, Alpinia zerumbet (Pers.) Burtt et Smith and A. purpurata (Vieill) K. Schum, which have a significant presence in Brazil. These species have been commercialized in the food and cosmetic industries. However, their greatest importance arises from the medicinal properties of their essential oils containing flavonoids, terpenoids and kavalactones which have been used in folk medicine to treat, for example, arterial hypertension and inflammatory processes. In addition, such species are also used in multidisciplinary studies, including phytochemistry, ethnobotany and biology, indicating the key pharmacological role of this genus in everyday life. Therefore, this work aims to present a bibliographic review of the genus Alpinia and its significance in therapeutic applications.
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.