Showing papers by "Deen Dayal Upadhyay Gorakhpur University published in 2004"
TL;DR: The acetone extract of ajwain essential oil showed better antioxidative activity for linseed oil as compared with synthetic antioxidants such as butylated hydroxyl toluene andbutylatedhydroxyl anisole.
Abstract: GC and GC-MS analysis of ajwain essential oil showed the presence of 26 identified components which account for 96.3% of the total amount. Thymol (39.1%) was found as a major component along with p-cymene (30.8%), gamma-terpinene (23.2%), beta-pinene (1.7%), terpinene-4-ol (0.8%) whereas acetone extract of ajwain showed the presence of 18 identified components which account for 68.8% of the total amount. The major component was thymol (39.1%) followed by oleic acid (10.4%), linoleic acid (9.6%), gamma-terpinene (2.6%), p-cymene (1.6%), palmitic acid (1.6%), and xylene (0.1%). Moreover, the oil exhibited a broad spectrum of fungitoxic behavior against all tested fungi such as Aspergillus niger, Aspergillus flavus, Aspergillus oryzae, Aspergillus ochraceus, Fusarium monoliforme, Fusarium graminearum, Pencillium citrium, Penicillium viridicatum, Pencillium madriti, and Curvularia lunata as absolute mycelial zone inhibition was obtained at a 6-microL dose of the oil. However, the acetone extract showed better antioxidative activity for linseed oil as compared with synthetic antioxidants such as butylated hydroxyl toluene and butylated hydroxyl anisole.
132 citations
TL;DR: Thermostability, pH stability, good hydrolytic capability, and stability in the presence of detergents, surfactants, chelators and commercial proteases make this enzyme potentially useful in laundry Detergents.
Abstract: A novel strain of Bacillus sphaericus JS1 producing thermostable alkaline carboxymethyl cellulase (CMCase; endo-1,4-beta-glucanase, E.C. 3.2.1.4) was isolated from soil using Horikoshi medium at pH 9.5. CMCase was purified 192-fold by (NH(4))(2)SO(4) precipitation, ion exchange and gel filtration chromatography, with an overall recovery of 23%. The CMCase is a multimeric protein with a molecular weight estimated by native-PAGE of 183 kDa. Using SDS-PAGE a single band is found at 42 kDa. This suggests presence of four homogeneous polypeptides, which would differentiate this enzyme from other known alkaline cellulases. The activity of the enzyme was significantly inhibited by bivalent cations (Fe(3+) and Hg(2+), 1.0 mM each) and activated by Co(2+), K(+) and Na(+). The purified enzyme revealed the products of carboxymethyl cellulose (CMC) hydrolysis to be CM glucose, cellobiose and cellotriose. Thermostability, pH stability, good hydrolytic capability, and stability in the presence of detergents, surfactants, chelators and commercial proteases make this enzyme potentially useful in laundry detergents.
109 citations
TL;DR: In this paper, a GC and GC-MS analysis of volatile oil obtained from Piper nigrum L resulted in the identification of 49 components accounting for 99.39% of the total amount, and the major components were β-caryophyllene (24.24%), limonene (16.88%), sabinene (13.01%), β-bisabolene (7.69%), and α-copaene (6.3%).
Abstract: GC and GC-MS analysis of volatile oil obtained from Piper nigrum L resulted in the identification of 49 components accounting for 99.39% of the total amount, and the major components were β-caryophyllene (24.24%), limonene (16.88%), sabinene (13.01%), β-bisabolene (7.69%) and α-copaene (6.3%). The acetone extract of pepper showed the presence of 18 components accounting for 75.59% of the total amount. Piperine (33.53%), piperolein B (13.73%), piperamide (3.43%) and guineensine (3.23%) were the major components. The oil was found to be 100% effective in controlling the mycelial growth of Fusarium graminearum in inverted petriplate technique. The acetone extract retarded 100% mycelial growth of Penicillium viridcatum and Aspergillus ochraceus in food-poisoning technique. Volatile oil and acetone extract were identified as a better antioxidant for linseed oil, in comparison with butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT). Copyright © 2004 Society of Chemical Industry
97 citations
38 citations
TL;DR: It was believed that alcoholic extract of Nerium indicum leaf can be used in aquatic environment for controlling predatory fish Channa punctatus population and their piscicidal activity may be due to their adverse effect on respiratory as well as energy production of fish.
Abstract: Laboratory evaluations were made to asses the piscicidal activity of ethyl alcohol extract of Nerium indicum leaf against predatory fish Channa punctatus and their ultimate mode of action on fish metabolism. Toxicity experiments show there was significant negative correlation between LC values
and exposure periods i.e. LC50 value decreased from 66.32 mg/L (24h) to 44.96 mg/L (96h).
Biochemical studies show that after exposure to sub lethal doses of alcoholic extract, pyruvate level and activities of acetylcholinesterase and cytochrome oxidase significantly decreased while lactate level and activities of alanine aminotransferase and aspartate amino transferase were significantly enhanced in both liver and muscle tissues of Channa punctatus. The alterations in all the above
biochemical parameters were significantly (P<0.05) time and dose dependent. There was a significant recovery observed in all the above biochemical parameters, in both liver and muscle tissues of fish after the seventh day of the withdrawal of treatment Thus it was believed that alcoholic extract of
Nerium indicum leaf can be used in aquatic environment for controlling predatory fish Channa punctatus population. Their piscicidal activity may be due to their adverse effect on respiratory as well as energy production of fish. The reversible nature of the piscicidal action could be advantageous in aquatic environment.
33 citations
TL;DR: Effects of sublethal exposure to cypermethrin and alphamethrin on the reproductive physiology and oxidative metabolism of the freshwater snail, Lymnaea acuminata, were studied.
30 citations
TL;DR: Significant variations in behavioural responses were observed in the snail even when the five carbohydrates were used in low concentrations in snail-attractant pellets, indicating that starch emerged as the strongest attractant for Lymnaea acuminata, followed by maltose.
Abstract: Snail control is one of the most important tools in the campaign to reduce the incidence of fascioliasis. In order to attain this objective, the method of bait formulation in order to contain an attractant and a molluscicide is an expedient approach to lure the target snail population to the molluscicide. This study identifies certain carbohydrates, namely sucrose, maltose, glucose, fructose and starch, for preparing such baits. These were tested on Lymnaea acuminata, an intermediate host of the digenean trematodes Fasciola hepatica and Fasciola gigantica. The behavioural responses of snails to these carbohydrates were examined. Significant variations in behavioural responses were observed in the snail even when the five carbohydrates were used in low concentrations in snail-attractant pellets. Starch emerged as the strongest attractant for Lymnaea acuminata, followed by maltose.
29 citations
Journal Article•
TL;DR: The results show a significant recovery in all the above biochemical parameters, in both liver and muscle tissues of fish after the 7th day of the withdrawal of treatment, which supports the view that the oleandrin is safer and may be useful substitute of other piscicides for removing the unwanted freshwater fishes from aquaculture ponds.
Abstract: Active compound oleandrin extracted from Nerium indicum (Lal Kaner) leaf has potent piscicidal activity. The piscicidal activity of oleandrin on freshwater fish C. punctatus was both time and dose dependent. Exposure to sub-lethal doses of oleandrin for 24hr and 96hr to fish caused significant alteration in the level of total protein, total free amino acid, nucleic acid, glycogen, pyruvate, lactate and enzyme protease, phosphatases, alanine.aminotransferase, aspartate aminotransferase and acetylcholinesterase activity in liver and muscle tissues. The alterations in all the above biochemical parameters were also significantly time and dose dependent. The results show a significant recovery in all the above biochemical parameters, in both liver and muscle tissues of fish after the 7 t h day of the withdrawal of treatment. Toxicity persistence test of oleandrin on juvenile Labeo rohita shows that fish seed of common culturing carp can be released into rearing ponds after three days of oleandrin treatment. It supports the view that the oleandrin is safer and may be useful substitute of other piscicides for removing the unwanted freshwater fishes from aquaculture ponds.
27 citations
TL;DR: Lymnaea acuminata's attraction to amino acids was studied using different amino acid concentrations in SAP and the snails were more attracted to the uncharged polar R group amino acid serine than to other groups of amino acids.
Abstract: Adult Lymnaea acuminata (average length 20-22 mm) were collected locally from lakes and low-lying submerged fields from Gorakhpur. The chemoattraction studies were made in round glass aquaria measuring 30 cm in diameter and filled to a depth of 10 mm with 500 ml dechlorinated tap water. Each aquarium was divided into four concentric zones. At the starting time of the assay 10 snails were placed on the circumference of outermost zone 0. Snail attractant pellets (SAP) were added simultaneously in the center of central zone 3. SAP of different amino acids were prepared at concentrations of 10, 20, 50, 80 and 100 mM/2% agar solution and, subsequently, spread to a uniform thickness of 5 mm. After cooling, SAP were cut in small pieces of 5 mm in diameter. Lymnaea acuminata's attraction to amino acids was studied using different amino acid concentrations in SAP. Pellets containing amino acids with non-polar R groups (proline and tryptophan), a charged polar group (arginine) and uncharged polar R groups (serine, citrulline and asparagine) were tested. The snails were more attracted to the uncharged polar R group amino acid serine than to other groups of amino acids. The preferred amino acid concentration was 80 mM. The attraction of snails to different amino acids was concentration dependent. Snails could discriminate amongst the different amino acids at > or = 50 mM.
25 citations
TL;DR: Sublethal in vivo 24 h exposure to active fractions of Punica granatum bark or Canna indica root or in combination with other plant‐derived molluscicides significantly inhibited the activity of acetylcholinesterase, acid/alkaline phosphatase, Na+K+ATPase and lactic dehydrogenase in the nervous tissue of Lymnaea acuminata.
Abstract: Sublethal in vivo 24 h exposure to (40% and 80% of 24 h LC50) active fractions of Punica granatum bark or Canna indica root or in combination with other plant-derived molluscicides significantly inhibited the activity of acetylcholinesterase, acid/alkaline phosphatase, Na+K+ATPase and lactic dehydrogenase in the nervous tissue of Lymnaea acuminata. The inhibition kinetics of these enzymes indicates that active fractions of both the plants caused a competitive inhibition of AChE, LDH, ALP, ACP and Na+K+ATPase. Copyright © 2004 John Wiley & Sons, Ltd.
24 citations
TL;DR: It is concluded that estrogen acts on the UBG to induce the release of CT, which in turn plays an important role in reproduction directly and/or indirectly through Ca.
TL;DR: In this article, the nitrate complexes of copper, nickel and zinc with diethylenetriamine (dien) have been prepared and characterised using TG-DTG, DSC, ignition delay (tid) and ignition temperature (IT) measurements.
Abstract: The nitrate complexes of copper, nickel and zinc with diethylenetriamine (dien) i.e. [Cu(dien)2](NO3)2, [Ni(dien)2](NO3)2·2H2O and [Zn(dien)2](NO3)2 have been prepared and characterised. Thermal studies were undertaken using TG-DTG, DSC, ignition delay (tid) and ignition temperature (IT) measurements. Impact sensitivity was measured using drop mass technique. The kinetic parameters for both non-isothermal and isothermal decomposition of the complexes were evaluated by employing Coats-Redfern (C-R) method and Avrami-Erofeev (A-E) equations (n=2 and 3), respectively. The kinetic analysis, using isothermal TG data, was also made on the basis of model free isoconversional method and plausible mechanistic pathways for their decomposition are proposed. Rapid process was assessed by ignition delay measurements. All these complexes were found to be insensitive towards impact of 2 kg mass hammer up to the height limit (110 cm) of the instrument used. The heat of reaction (?H) for each stage of decomposition was determined using DSC.
TL;DR: There was a significant recovery observed in the activity of enzyme acetylcholinesterase in both the tissues of fish after 7th day of the withdrawal of treatment, so the diethyl ether extract of E. royleana stem bark can be used for control of unwanted predatory fish C. punctatus from fish culture ponds.
TL;DR: In this paper, the malic acid (MA) solutions are added to ordinary Portland cement (OPC), rapid heat evolution takes place, but the hydration is retarded considerably at all the MA concentrations.
TL;DR: The result indicates that the different dilutions of the lattices of both plants also significantly delayed the post-embryonic development of Culex larvae.
Abstract: Different dilutions of aqueous and methanolic extracts of lattices of Nerium indicum (Apocynaceae) and Euphorbia royleana (Euphorbiaceae) were administered for 24h and 48h to the Culex quinquesfasciatus (Diptera: Culicidae) larvae in order to test their lethality. The larvicidal activity of lattices of both plants, were time and dose dependent respectively. There was a significant negative correlation between LC values and exposure periods. The result also indicates that the different dilutions of the lattices of both plants also significantly delayed the post-embryonic development of Culex larvae. Methanolic extract of N. indicum is 1.8 times more toxic than aqueous extract while in case of E. royleana , the methanolic extract was 16 times more toxic in comparison to aqueous. Key Words: Nigerian Journal of Natural Products and Medicine Vol.7 2003: 61-64
TL;DR: When the freshwater snail Lymnaea acuminata was exposed to sub-lethal doses of carbaryl, fecundity was significantly reduced and even stopped at higher sub- lethal doses and altered metabolic activity in the body tissue of the snail was observed.
TL;DR: Withdrawal of the snails to fresh water after the above treatment caused a significant recovery in the fecundity of the snail Lymnaea acuminata, and twenty-four-hour sublethal treatment with the acetogenins caused a maximum reduction in the protein, amino acid, DNA, and RNA in the ovotestis of treated LymNAea acumingata.
Abstract: Effects of sublethal treatment (20 and 60% of LC50/24 h) of the plant-derived molluscicides Annona squamosa Linn. and Lawsonia inermis Linn. and their combinations with other herbal molluscicides, such as Cedrus deodara Roxb, Azadirachta indica A. Juss, bulb powder of Allium sativum Linn. and Polianthes tuberosa Linn., and oleoresin of Zingiber officinale Rosc., and acetogenins extracted from the seeds of A. squamosa Linn., on the reproduction of the snail Lymnaea acuminata have been studied. It was observed that the plant-derived molluscicides singly and in binary combinations with other herbal molluscicides and the extracted acetogenins caused a significant reduction in the fecundity, hatchability, and survival of young snails. Withdrawal of the snails to fresh water after the above treatment caused a significant recovery in the fecundity of the snail Lymnaea acuminata. Twenty-four-hour sublethal treatment with the acetogenins caused a maximum reduction in the protein, amino acid, DNA, and RNA in the ovotestis of treated Lymnaea acuminata.
TL;DR: In this article, the effect of K2SO4 activator on the hydration of chemical anhydrite obtained from burned FGD-gypsum has been studied by different experimental techniques.
Abstract: The effect of K2SO4 activator on the hydration of chemical anhydrite obtained from burned FGD-gypsum has been studied by different experimental techniques. Results obtained show that the degree of hydration increases when the K2SO4 concentrations increase from 0.5 to 3.3 wt%. Their heat evolution rate and maximum value also increase with the increase of K2SO4 concentration. The highest values were obtained when the hydration degree was about 50%. Also a correlation between the hydration degree and the total heat evolved was obtained. The X-ray and SEM/EDX studies have shown that K2SO4 is adsorbed at the surface of CaSO4 even within 5 min of hydration and a syngenite—a double salt K2SO4·CaSO4·H2O is formed (even in the presence of 1.0 wt% K2SO4). Also, important changes in the morphology of the dihydrate crystal are detected. Finally, in the presence of 1.0 wt% K2SO4 (water/anhydrite (W/A) ratio=0.33), it was found that the resonance frequency, modulus of elasticity, compressive strength, and tensile strength increase with the degree of hydration whereas the total porosity decreases.
TL;DR: In this paper, the electrical conductivity and thermoelectric power of pressed pellets of Li 3 VO 4, Na 3 VO4 are presented in the temperature range from 440 K to the melting point of each solid.
TL;DR: In this article, a number of samples of sodium phosphate glasses doped with Cd/Co or Ag chlorides were prepared and characterized by X-ray diffraction, IR spectral, ion transport and DSC studies.
Abstract: A number of samples of sodium phosphate glasses doped with Cd/Co or Ag chlorides were prepared and characterized by X-ray diffraction, IR spectral, ion transport and DSC studies. It was found from DSC studies that the glass transition temperature (Tg) and crystallization temperature (Tc) values increased with the increasing concentrations of the dopants Cd/ or Co chlorides. However, the Tg and Tc values were found to decrease when the AgCl was taken as the dopant and the following sequence is observed: Tg(CoCl2)>Tg(CdCl2)> Tg(AgCl) Tc(CoCl2)>Tc(CdCl2)>Tc(AgCl) These results have been discussed and explained on the basis of changes in the structure of sodium phosphate glassy matrix by the addition of different cations as dopants.
TL;DR: It was observed that the presence of male parasitoids affects the progeny sex ratio by decreasing the number of females in the offspring population, i.e. a significant increase in the proportion of males was observed in united sexes.
Abstract: The endoparasitoid Campoletis chlorideae and its host Helicoverpa armigera were reared in the laboratory to determine the progeny sex ratio of C chlorideae in the presence and absence of male parasitoids It was observed that the presence of male parasitoids affects the progeny sex ratio by decreasing the number of females in the offspring population, ie a significant increase in the proportion of males was observed in united sexes Therefore, while constructing the life table of the parasitoid, the effect of presence of male parasitoids, should be considered together with other factors, which decreases the efficiency of the parasitoid
TL;DR: In this article, a series of iron(II,III,III) and cobalt(II) complexes of thiocarboxylic acids of the general formulas [FeIIFe2 IIIO(SOCR)6(L)3] and [Co(SocR)2(L),2] have been synthesized and characterized by elemental and thermogravimetric analyses, spectral (infrared, electronic, and Mossbauer) studies, molar conductance, magnetic susceptibility, and molecular weight determinations.
Abstract: A series of iron(II,III,III) and cobalt(II) complexes of thiocarboxylic acids of the general formulas [FeIIFe2 IIIO(SOCR)6(L)3] and [Co(SOCR)2(L)2] (R = C2H5 or C(CH3)3 and L = EtOH or py) have been synthesized and characterized by elemental and thermogravimetric analyses, spectral (infrared, electronic, and Mossbauer) studies, molar conductance, magnetic susceptibility, and molecular weight determinations. The electronic spectral data suggested an octahedral environment around the metal ion in both the iron as well as the cobalt complexes. A band around 13,800 cm−1 in the electronic spectra of the iron complexes indicated intervalence‐transfer between Fe(II) and Fe(III) moieties. A bridging mode of coordination could be assigned for the thiocarboxylate anions in the iron complexes and a chelating mode of coordination for the cobalt complexes have been suggested by infrared spectral data along with a new band at 540 cm−1, which may be ascribed owing to νasy(Fe3O) vibrations. Mossbauer studies rev...
TL;DR: The aqueous and serially purified latex extracts of plants Euphorbia pulcherima and Euphorbiaceae have potent molluscicidal activity and are useful for a variety of conditions, such as rheumatism, snakebite, asthma, obstipation, and skin-diseases.
TL;DR: Maximum shoot proliferation, free from callus and vitrification but with poor rooting could be obtained in liquid MS medium with PVP, but the best rooting occurred on semisolid MS medium containing 0.8% agar.
Abstract: Paedaria foetida L, which has great medicinal value is facing danger of extinction. For its conservation, in vitro multiplication may prove one of the best techniques. Micropropagation of P. foetida has been achieved through the culture of nodal explants. The explants produced shoots on MS medium with 0.8% agar. This medium, however, caused high degree of browning of the explants and death of sprouted shoots. Agar free liquid MS medium with polyvinylpyrrolidone (PVP) proved better. Maximum shoot proliferation, free from callus and vitrification but with poor rooting could be obtained in liquid MS medium with PVP (0.8%), NAA (0.5 mg l−1) and BA (2.0 mg l−1). The best rooting occurred on semisolid MS medium containing 0.8% agar and 0.5 mg l−1 IBA.
TL;DR: In this paper, a mixed-valence FeIIFeIII with general formula [FeII-FeIII姫2O(OOCR)3(OWR′SH)3L3] was successfully prepared by substitution of straight chain carboxylic acids and mercaptocarboxylates.
Abstract: Mixed carboxylates and mercaptocarboxylates of mixed-valence FeIIFeIII with general formula [FeII-FeIII
2O(OOCR)3(OOCR′SH)3L3](where R = C13H27, C15H31 or C17H35; R′= CH2 or C6H4 and L = pyridine) were successfully prepared by substitution of [FeIIFeIII
2O(OAc)6(H2O)3] with straight chain carboxylic acids and mercaptocarboxylic acids. The title products have been characterized by elemental analyses, molar conductances and magnetic susceptibility measurements, i.r., electronic and Mossbauer spectral data. The i.r. spectra showed resolved bands arising from the ν
asym(OCO) and ν
sym(OCO) vibrations of the bridging carboxylate and mercaptocarboxylate ligands along with the ν
asym(Fe3O) vibrations. Mossbauer spectroscopic studies revealed two resolved quadrupole doublets due to FeII and FeIII at 80, 200 and 295 K, confirming the valence-localized type of compound. This fact has also been supported by the observed electronic spectral bands in the complexes. Magnetic susceptibility measurements showed net anti-ferromagnetic coupling related to mixed-valence pairs. A structure for the complexes has been established on the basis of physico-chemical studies.
Journal Article•
TL;DR: It is proposed that the fifth fraction of E. royleana latex can be used as a molluscicide for controlling the harmful snail population from aquatic ecosystem without any harm due to their reversible toxic action.
Abstract: Laboratory evaluation was made to assess the molluscicidal activity of different fractions of Euphorbia royleana (Family- Euphorbiaceae) latex obtained through sephadex gel column against freshwater snail Lymnaea (Radix) acuminata Lamarack. This snail is the vector of liver fluke, Fasciola hepatica Linnaeus and Fasciola gigantica Cobbold, which causes endemic fascioliasis in cattle and livestock. The toxic effect of the different fractions was time dependent and fifth fraction obtained through benzene: ethyl acetate (5:5) had maximum molluscicidal activity against Lymnaea acuminata. There was a significant negative correlation between LC values and exposure periods thus increase in exposure time, the LC 5 0 value of V fraction of Euphorbia royleana latex was decreased from 14.28 mg/l (24 hr) to 9.28 mg/l (96 hr) against Lymnaea acuminata. After exposure to sub-lethal concentrations of this fraction there were significant time and dose dependent alterations observed in pyruvate, lactate levels, ALAT, AAT, AChE and cytochrome oxidase enzyme activities in different body tissues of Lymnaea acuminata. It is proposed that the fifth fraction of E. royleana latex can be used as a molluscicide for controlling the harmful snail population from aquatic ecosystem without any harm due to their reversible toxic action.
TL;DR: In this article, the authors studied the inhibition and dissolution of calcium oxalate crystals in solutions containing a homoeopathic medicine Berberis Vulgaris-Q, amino acids such as aspartic acid, glutamic acid, α-keto glutaric acid and juices of some fruits of citrus group such as lemon, orange and mausammi.
TL;DR: Withdrawal study shows that there is a partial recovery in snail's tissues and near complete recovery in fish tissues after 7th day of the withdrawal of treatment.
Abstract: The latex of Codiaeum variegatum plant (Euphorbiaceae) was found to have high molluscicidal activity against freshwater snail Lymnaea acuminata . Exposure of sub-lethal doses (0.15 DW,mg/L and 0.30 DW,mg/L for 24h) and (0.06 DW,mg/L and 0.12 DW,mg/L for 96h) of latex of this plant on snail Lymnaea acuminata caused significant reduction in the activity of enzyme acetylcholinesterase, acid and alkaline phosphatase in the nervous, hepatopancreas and ovotestis tissues after 24h and 96h exposure periods. The non-target fish Channa punctatus , which shares the habitat with these snail also when exposed to sub-lethal doses of snails (0.15 DW,mg/L and 0.30 DW,mg/L for 24h) caused significant reduction in the activity of enzyme acetylcholinesterase, acid and alkaline phosphatase in muscle, liver and gonadal tissues of fish after 96h exposure periods. Withdrawal study shows that there is a partial recovery in snail's tissues and near complete recovery in fish tissues after 7th day of the withdrawal of treatment. Key Words: Lymnaea acuminata; Codiaeum variegatum; Euphorbiaceae Acetylcholinesterase; Phosphatases Nigerian Journal of Natural Products and Medicine Vol.7 2003: 20-24
TL;DR: In this article, a colloidal cadmium sulfide containing Cadmium selenide films were prepared by electrochemical codeposition to explore possibilities of obtaining enhanced photoresponsivenesss and increased resistance toward electrochemicalcorrosion.
Abstract: Colloidal cadmium sulfide containing cadmium selenide films were prepared by electrochemical codeposition to explore possibilities of obtaining enhanced photoresponsivenesss and increased resistance toward electrochemicalcorrosion. Inclusion of colloidal particles was inferred on the basis of current-voltage and photoaction spectral studies. Tafel plots were constructed for examination of corrosion behavior of the electrodeposits. The results show that colloidal cadmium sulfide inclusion improves photoactivity and electrochemical corrosion of the electrodeposited cadmium selenide in a significant measure.