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Role of phenolics as antioxidants,biomolecule protectors and as anti-diabetic factors-Evaluation on bark and empty pods of Acacia auriculiformis

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Asian Pacific Journal of Tropical Medicine 2012年第10期5卷 757-765页

作者： Arumugam Sathya Perumal Siddhuraju Bioresource Technology Lab Department of Environmental SciencesBharathiar University

Objective:To search for an efficient and inexpensive source of phytoconstituents with antioxidant potential and health promoting traits from bark and empty pods of Acacia auriculiformis （A.auriculiformis）.Methods:Samples of bark and empty pod extracts were analyzed for bioactives（phenolics,flavonoids and proanthocyanidins） and subjected to free radical scavenging activity on DPPH*,ABTS?,OH?,O2*,and NO along with the determination of reducing power, iron chelating activity and peroxidation inhibition.Defensive action of extracts on biomolecules and cell membranes were evaluated by DNA nicking assay and haemolysis inhibition assay respectively,α-amylase andα-glucosidase inhibitory potentials were also determined. Results:All the bioactives analyzed were higher in bark（B） than empty pods（EP）[TPC:B （574.51±16.11）;EP（96.80±3.45） mg GAE/g.TFC:B（94.71±7.65）;EP（24（?）87±20.45） mg RE/g. Proanthocyanidins:B（2.81±0.31）;EP（1.25±0.01） mg LE/100 g DM]except flavonoids.Both the extracts showed higher quenching capacity on DPPH and ABTS（DPPH:B（0.21±0.01）;EP（1.51±0.17） g extract/g DPPH.ABTS:B（111 519.14±79 340.91）;EP（80 232.55±32 894.12） mmol TE/g） with the FRAP of B（84 515.63±3 350.69） and EP（47 940.79±1 257.60） mmol Fe（（?））/g.Iron chelation was not observed.In addition,they showed lower quenching activity on OH?（B（48.95±1.72）;EP（34.94±1.62）%） and equivalent quenching on O2?（B（53.47±3.92）;EP（24.41±2.61）%）,NO（B（49.04±5.04）; EP（51.00±5.13）%）,peroxidation inhibition（B（67.50±5.50）;EP（55.l±2.3）%） and antihaemolytic potential（B（87.60±6.84）%） towards authentic antioxidant standards.Interestingly,Empty pod extracts are devoid of antihaemolytic activity.Both the extracts showed dose dependent DNA protection.Besides this,bark and empty pod extracts exhibited dual inhibiting potential againstα-amylase andα-glucosidase enzymes.Conclusions:On summarization,it insinuated that both bark and empty pods can be used for the preparation of antioxidant/nutraceuti

关键词： Phenolics Bark Empty pods Acacia auriculiformis Antioxidant activity TypeⅡdiabetes

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Competition-density effect of tree organs in Acacia auriculiformis stands

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Journal of Forestry Research 2019年第3期30卷 891-898页

作者： Huifang Feng Li Xue College of Forestry and Landscape Architecture South China Agricultural UniversityGuangzhou 510642People’s Republic of China General Administrative Station of Forestry Seed and Seedling Guangzhou 510173People’s Republic of China

The competition-density (C-D) effects for mean mass for tree, stem, branch and leaf were analyzed in Acacia auriculiformis stands. Mean tree mass-density and mean organ mass-density were well explained by the C-D equation of tree and the C-D equation of tree organ, respectively. An equation describing the relationship between mean leaf area u and density was formulated that fit the u-data well. The relationship between mean tree mass w and the ratio of each organ to mean tree mass (wo/ w) was examined. With increasing w, the stem mass ratio wS/w increased, whereas the branch mass ratio wB/w and the leaf mass ratio wL/w decreased. The yield difference between the lowest-density stand and the high-density stand became greater with stand growth. However, the yield of the mid-density stand was slightly lower than the yield of the high-density stand during the experimental period. To produce the most desirable combination of demanding individual-tree size and relative high stem yield, the mid-density is recommended as proper planting density for future management of A. auriculiformis stands.

关键词： Acacia auriculiformis C-D effect Leaf area Ratio of organ mass to tree mass Tree organ Stand yield

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A comprehensive review on phytopharmacological investigations of Acacia auriculiformis A.Cunn. ex Benth

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Asian Pacific Journal of Tropical Biomedicine 2019年第1期9卷 1-11页

作者： Naresh Kumar Rangra Subir Samanta Kishanta Kumar Pradhan Department of Pharmaceutical Sciences & Technology Birla Institute of Technology

Acacia auriculiformis A.Cunn. ex Benth. is a perennial shrub having a wide range of medicinal potentials and is widely distributed throughout the world. It is being used traditionally to overcome various medical complications like sore eyes, aches, rheumatism, allergy, itching, and rashes. Besides, Acacia auriculiformis has been proven for many pharmacological activities like central nervous system depressant activity, antioxidant, antimicrobial, antimalarial, anti-filarial, cestocidal, antimutagenic, chemopreventive, spermicidal, wound healing, hepatoprotective and antidiabetic activity due to its low toxicity(LD50 = 3 741.7 mg/kg) and high efficacy. In addition, various phytochemical investigations reveal the presence of chief constituents as flavonoids(Auriculoside) and triterpenoid saponin glycosides(acaciasides-acaciaside A & B) in different parts of this plant. Since many years researchers have been carrying out various studies on this medicinal important shrub to elicit the various biological activities. This review attempts to highlight the pharmacognostical, phytochemical and pharmacological observations from 1965 to 2018 retrieved from SciF inder, Scientific journals, books, Google Scholar, and botanical electronic database websites. The various plant extracts evaluated for different pharmacological activities showed significant efficacy. Bioactive phytoconstituents isolated from various parts of the plant are highlighted. Pharmacognostical standardization of the plant done with various standard parameters is also reported. The low toxicity of this plant and the presence of major bioactive phytoconstituents like flavonoids and triterpenoid saponin glycosides are responsible for a therapeutic remedy for various diseases and pharmacological activities respectively. This review provides exhaustive information about the pharmacognostical, phytochemical, and pharmacological investigations of Acacia auriculiformis till date.

关键词： Acacia auriculiformis Pharmacognostical Phytochemical Pharmacological

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Root and xylem ABA changes in response to soil drying in two woody plants

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Chinese Science Bulletin 1999年第24期44卷 2236-2241页

作者： Huafang Wang Jianhua Zhang Jiansheng Liang Weilun Yin Hong Kong Baptist Univ Dept Biol Hong Kong Peoples R China Beijing Forestry Univ Coll Plant Sci Beijing 100083 Peoples R China

Two woody plants, Platycladus orientalise (tolerant to drought) and Acacia auriculi-formis (sensitive to drought), have been subjected to rapid and slow soil drying. ABA levels in their roots and xylem sap have been determined using radioimmunoassay (RIA, sensitivity is 0.4 pmol per assay vial) with a monoclonal antibody against ( + )-ABA. ABA contents of P. orientalise and A. auriculiformis growing in well watered soil are 0.3 and 2.5 nmol-gDW-1 in

关键词： Platycladus orientalise Acacia auriculiformis root xylem sap ABA soil drying.

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Responses of woody plant root and xylem sap ATP to soil drying

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Chinese Science Bulletin 1999年第13期44卷 1172-1178页

作者： Huafang Wang Jianhua Zhang Jiansheng Liang Weilun Yin Beijing Forestry Univ Beijing 100083 Peoples R China Hong Kong Baptist Univ Hong Kong Peoples R China

The ATP in roots and xylem sap of two woody plant species, Platycladus orientalis and Acacia auriculiformis, subjected to rapid and slow soil drying has been determined employing firefly luciferase ATP assay method (sensitivity is at 10-12 mol ATP L-1). The ATP levels in the two species were 1.6 nmol. gDW-1 and 0.6 nmol. gDW-1 in roots, and 5.6 μmol·m-3 and 8 μmol ·m-3 in xylem sap, respectively. When plants of P. orientalis and A. auriculiformis were subjected to rapid soil drying, respectively, as soil water content （SWC） decreased from the normal level ( 0.2.5 g·gDW-1) to 0.02 and 0.06 g·gDW-1, separately, plant water potential （ ψ ）dropped to - 4 and - 3.2 MPa, differently, the ATP in roots decreased 99.7% and 42%, respectively. When the rapidly dried soil was watered for up to 6 d, SWC and ψ, were found to recover to their normal levels, but ATP content in roots of P. orientalis and A. auriculiformis recovered by 10% and 23%, respectively. When plants

关键词： Platycladus orientalis Acacia auriculiformis roots xylem sap ATP soil drought.

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金合欢属auriculiformis提取物三萜烯皂甙对精子的制动作用

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国际生殖健康/计划生育杂志 1992年第1期 47-47页

作者：陈绮

皂角甙是甾体和三萜系化合物的配糖体,具有杀精剂的性质。采用石油醚(60～80℃)和90％的乙醇从金合欢种子中分离出两种水溶性皂甙(Tg)并以此为实验材料进行了几方面的杀精子实验研究。以改良的Sander-Cramer法进行杀精实验。

关键词：精子金合欢 Tg 对照组生殖细胞相思树属 auriculiformis 杀精

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