scholarly journals Studies on Morpho-microanatomical Evaluation of the Leaves of Tridax procumbens Linn (Asteraceae)

2010 ◽  
Vol 2 (3) ◽  
pp. 613
Author(s):  
M. Salahuddin ◽  
S. Fuloria ◽  
Shilpa Pahwa ◽  
S. Kumari ◽  
S. K. Gupta
Keyword(s):  
Single Layer ◽  
Lower Epidermis ◽  
Tridax Procumbens ◽  
Phytochemical Studies ◽  
Serrate Margin ◽  
Multicellular Trichome

The present study deals with the macro and microscopical studies of Tridax procumbens Linn.leaf. Some distinct characters were observed while studying their transverse sections. Macroscopically, the leaf’s shape was lanceolate to ovate measuring 7 cm long and 1-4 cm wide with irregularly serrate margin and pubscent on both sides. Microscopically, the midrib and laminar region showed a distinct epidermis. The upper epidermis was bilayer, with a small, rounded shape, covering multicellular trichome and the lower epidermis had single layer, elongated cells, arranged closely. Physiochemical and preliminary phytochemical studies of the leaf were also carried out. The present study might be useful to supplement information in regard to its identification parameters.  Keywords: Leaf; Macroscopical; Microscopical; Tridax procumbens. © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v2i3.4775             J. Sci. Res. 2 (3), 515-521 (2010) 

scholarly journals Macro- and Micro-morphological, Anatomical, Cytological and Phytochemical Properties of Tridax procumbens Linn. (Asteraceae)

2020 ◽  
Vol 24 (4) ◽  
pp. 601-606
Author(s):  
C. Wuhua ◽  
I.I. Pepple
Keyword(s):  
Cardiac Glycosides ◽  
Mitotic Chromosome ◽  
Careful Examination ◽  
Root Tips ◽  
Floral Structure ◽  
Plant Parts ◽  
Tridax Procumbens ◽  
The Family ◽  
Anomocytic Stomata ◽  
Phytochemical Studies

This study examined the macro- and micro-morphological, Anatomical, Cytological and Phytochemical Properties of Tridax procumbens L. in the family Asteraceae. Observations of plant parts aided by measurements were done and these were sectioned following Wahua’s method; root tips squashed with FLP Orcein and qualitative phytochemical analyses were carried out. The slides were viewed using the light compound microscope and photomicrographs were taken after careful examination from good preparations. Macromorphological studies showed the plant grows up to 40cm or more in height. Foliar features revealed opposite, pinnate, oblong to ovate with coarsely serrated margin and acute apex, 4±1.5cm long and 2±1cm wide with petiole up to 1.5±0.5cm in length. The floral structure show cased diameter of each flower head as 1.0±0.4cm while the peduncle is elongated and up to 10±5cm in length; the petal is 0.7±0.2cm in length alongside tubular sepals up to 0.9±0.3cm in length. The stamen is 0.9±0.2cm in length while the carpel is 1.0±0.1cm. Presence of anomocytic stomata which is amphistomatic. Anatomical sections on the mid-ribs, petiole, internodes, nodes and roots revealed peculiar internal features. Mitotic chromosome is 2n=36. Phytochemical studies revealed the presence of saponins, alkaloids, flavonoids, tannins, steroids, cardiac glycosides, phenols. The information generated from this study would further aid in the delimitation of the species. Keywords: Tridax procumbens, Morphology, anatomy, cytology, palynology, phytochemistry

scholarly journals Pharmacognostic and Preliminary Phytochemical Evaluation of Leaf of Syzygium Cumini (L.) Skeels

2021 ◽  
Vol 12 (3) ◽  
pp. 684-688
Author(s):  
Shyam Baboo Prasad ◽  
Arun M Gurav ◽  
Goli P Prasad ◽  
Anupam K Mangal ◽  
Srikanth N
Keyword(s):  
Single Layer ◽  
Fluorescence Analysis ◽  
Physicochemical Analysis ◽  
Water Soluble ◽  
Phytochemical Analysis ◽  
Syzygium Cumini ◽  
Lower Epidermis ◽  
Microscopic Evaluation ◽  
Physicochemical Studies ◽  
Physicochemical Evaluation

Syzygium cumini (L.) Skeels (Family: Myricaceae) commonly known as Jamun is a widely used medicinal plant in Ayurveda. In spite of its numerous medicinal attributes, no published work is available on pharmacognostic characterization, physicochemical analysis of its leaves. The measures taken for pharmacognostic characterization were macroscopy, microscopy, powder microscopy, physicochemical evaluation, fluorescence analysis, and preliminary phytochemical screening. The microscopic evaluation showed useful characters for the recognition of leaf of Syzygium cumini (L.) Skeels . Transverse section, showed presence of single layer of wavy epidermal cells with striated cuticle single layer Palisade beneath upper epidermis in lamina region (contains compact elongated cells), Spheraphide in lamina region, collenchyma below the upper epidermis and above the lower epidermis in midrib region, Xylem and phloem in center, Sclerenchyma in between vascular bundle and collenchyma in midrib region. Wavy epidermal cell in the upper epidermis, anisocytic stomata in the lower epidermis, Bordered pitted reticulate vessels, Calcium oxalate crystal sheath in the lamina, fragment of fibers and Spiral vessels were observed in powder microscopy. Physicochemical studies showed total ash (3.1%), acid insoluble ash (0.7%), alcohol soluble extractive values (10.96 %), and water-soluble extractive values (12.32 %). Phytochemical analysis revealed the presence of sugar, lipid, Glycoside, saponins, phenols, flavonoids, tannins, tri-terpenoids and steroids. The study forms the first report on pharmacognostic characters and a physicochemical parameter which could be useful for identification and authentication of the plant.

scholarly journals PHYTOCHEMICAL STUDIES ON SOME SELECTED SPECIES OF ASTERACEAE FAMILY OF RAJASTHAN, INDIA

2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Varsha Solanki ◽  
Tahira Begam ◽  
Rana Taj ◽  
Shahdab Hussain
Keyword(s):  
Vascular Plants ◽  
Lead Acetate ◽  
Plant Material ◽  
Parthenium Hysterophorus ◽  
Pharmacological Activities ◽  
Tridax Procumbens ◽  
Ajmer District ◽  
Phytochemical Studies ◽  
Asteraceae Family

The Asteraceae is a large and widely spread family of vascular plants. The Plants of this family are known to have a variety of pharmacological activities. Verbesina alternifolia, Parthenium hysterophorus, Tridax procumbens is collected from Ajmer district and identified with taxonomical characters. Alkaloids (Wagner’s test, Mayer’s test, Hager’s test), Steroid (Libermann Burchard test, Salkowaski), Glycosides (Keller kilani test ), and Flavonoids (Lead Acetate test) are isolated from the Verbesina alternifolia,, Parthenium hysterophorus, Tridax procumbens plant material collected from Ajmer district.

Crystalline order to a resolution of 4.7 A in the sheath of Methanospirilium hungatii: A cross-beta structure

1984 ◽  
Vol 42 ◽  
pp. 214-215
Author(s):  
Murray Stewart ◽  
T.J. Beveridge ◽  
D. Sprott
Keyword(s):  
Cell Wall ◽  
Single Layer ◽  
Uranyl Acetate ◽  
Optical Diffraction ◽  
Tube Axis ◽  
Basic Subunit ◽  
Beta Structure ◽  
Diffraction Patterns ◽  
Protein Treatment ◽  
General Appearance

The archaebacterium Methanospirillum hungatii has a sheath as part of its cell wall which is composed mainly of protein. Treatment with dithiothreitol or NaOH released the intact sheaths and electron micrographs of this material negatively stained with uranyl acetate showed flattened hollow tubes, about 0.5 μm diameter and several microns long, in which the patterns from the top and bottom were superimposed. Single layers, derived from broken tubes, were also seen and were more simply analysed. Figure 1 shows the general appearance of a single layer. There was a faint axial periodicity at 28.5 A, which was stronger at irregular multiples of 28.5 A (3 and 4 times were most common), and fine striations were also seen at about 3° to the tube axis. Low angle electron diffraction patterns (not shown) and optical diffraction patterns (Fig. 2) from these layers showed a complex meridian (as a result of the irregular nature of the repeat along the tube axis) which showed a clear maximum at 28.5 A, consistent with the basic subunit spacing.

Differentiation Processes of the Ocellar Retina of the Honeybee (Apis Mellifera L.)

1990 ◽  
Vol 48 (3) ◽  
pp. 430-431
Author(s):  
Maria Anna Pabst
Keyword(s):  
Apis Mellifera ◽  
Distal Part ◽  
Cell Layer ◽  
Single Layer ◽  
Photoreceptor Cells ◽  
Distal Segment ◽  
Compound Eyes ◽  
Thin Sections ◽  
Ultrastructural Studies ◽  
Adult Worker

In addition to the compound eyes, honeybees have three dorsal ocelli on the vertex of the head. Each ocellus has about 800 elongated photoreceptor cells. They are paired and the distal segment of each pair bears densely packed microvilli forming together a platelike fused rhabdom. Beneath a common cuticular lens a single layer of corneagenous cells is present.Ultrastructural studies were made of the retina of praepupae, different pupal stages and adult worker bees by thin sections and freeze-etch preparations. In praepupae the ocellar anlage consists of a conical group of epidermal cells that differentiate to photoreceptor cells, glial cells and corneagenous cells. Some photoreceptor cells are already paired and show disarrayed microvilli with circularly ordered filaments inside. In ocelli of 2-day-old pupae, when a retinogenous and a lentinogenous cell layer can be clearly distinguished, cell membranes of the distal part of two photoreceptor cells begin to interdigitate with each other and so start to form the definitive microvilli. At the beginning the microvilli often occupy the whole width of the developing rhabdom (Fig. 1).

Characterization of a monolayer graphitic structure

1994 ◽  
Vol 52 ◽  
pp. 760-761
Author(s):  
X. Lin ◽  
X. K. Wang ◽  
V. P. Dravid ◽  
J. B. Ketterson ◽  
R. P. H. Chang
Keyword(s):  
Three Dimensional ◽  
Single Layer ◽  
Synthesis Process ◽  
Graphitic Structure ◽  
Positive Gaussian Curvature ◽  
Graphitic Sheet ◽  
Structural And Electronic Properties ◽  
New Material ◽  
Hexagonal Network

For small curvatures of a graphitic sheet, carbon atoms can maintain their preferred sp2 bonding while allowing the sheet to have various three-dimensional geometries, which may have exotic structural and electronic properties. In addition the fivefold rings will lead to a positive Gaussian curvature in the hexagonal network, and the sevenfold rings cause a negative one. By combining these sevenfold and fivefold rings with sixfold rings, it is possible to construct complicated carbon sp2 networks. Because it is much easier to introduce pentagons and heptagons into the single-layer hexagonal network than into the multilayer network, the complicated morphologies would be more common in the single-layer graphite structures. In this contribution, we report the observation and characterization of a new material of monolayer graphitic structure by electron diffraction, HREM, EELS.The synthesis process used in this study is reported early. We utilized a composite anode of graphite and copper for arc evaporation in helium.

The Continuous Single-Layer Anastomosis in the Gastrointestinal Tract

Swiss Surgery ◽  
2003 ◽  
Vol 9 (3) ◽  
pp. 114-120 ◽  
Author(s):  
Steinke ◽  
Leippold ◽  
Schweizer
Keyword(s):  
Gastrointestinal Tract ◽  
Single Layer

Über die Frage der besten oder "richtigen" Technik bei gastrointestinalen Anastomosen wird seit je diskutiert. Die Ansprüche an eine gute Anastomosentechnik sind: Gute Durchblutung, Wasserdichtigkeit, Spannungsfreiheit, Sicherheit, leichte Durchführbarkeit, wenig Unruhe und Verschmutzung im Operationsgebiet und geringe Kosten. Die Operationstechnik der extramukösen, fortlaufenden Anastomosentechnik im Gastrointestinaltrakt wird in Wort und Bild erläutert. Anhand einer Pilotstudie, einer randomisierten Vergleichsstudie, einer Schweizer Multizenterstudie und schliesslich einer 5-jährigen Qualitätskontrollstudie wird gezeigt, dass diese "Schweizer"-Technik allen Anforderungen zur Durchführung einer "idealen" Anastomose gerecht wird und an fast allen intestinalen Lokalisationen verwendet werden kann.

Lipase inhibitory activity and phytochemical studies of Polygonum sericeum

Planta Medica ◽  
2013 ◽  
Vol 79 (13) ◽  
Author(s):  
M Orgilkhatan ◽  
M Toshihiro ◽  
K Kyoko ◽  
E Selenge ◽  
Y Fumihiko ◽  
...  
Keyword(s):  
Inhibitory Activity ◽  
Phytochemical Studies
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