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Nutritive and Anti-nutritive Evaluation of Cnidoscolus aurifolia Leaves Полный текст
2016
Uwemedimo Emmanuel Udo | Akaninyene Uwemedimo Udo
The leaves of Cnidoscolus aurifolia were analysed for their chemical, antinutrients, proximate and mineral element compositions using standard procedures. Phytochemical screening revealed the presence of alkaloids, saponins, flavonoids, terpenes and tannins while anthraquinones, glycosides and phlobatannins were absent. Proximate analysis indicated high protein content (59.45 ± 0.07%) with crude fibre and fat also present in appreciable quantities. Mineral elements determination showed the presence of calcium, iron, magnesium, potassium and zinc. Antinutrient analysis of the leaf extract of C. aurifolia indicated low levels of phytic acid and hydrocyanide well below the lethal doses. An unusually high oxalate level of 404.80 ± 0.11 mg/100 g (dry weight) was also obtained although still below toxic level. These results support the ethnomedicinal and nutritional uses of this plant and suggest that the consumption of leaves of C. aurifolia is not harmful nutritively.
Показать больше [+] Меньше [-]Agricultural Extension Contact and Farmer’s Income in Bangladesh Полный текст
2016
Abu Zafar Mahmudul Haq
The impacts of extension contact on income of farmers have been examined with a view to evaluate the agricultural extension services in Bangladesh. The scope of the study was ten villages of Gazipur of Bangladesh. The objective of the study is to identify the effect of extension contact on crop income, livestock income, fisheries income, miscellaneous income, total agricultural income, nonagricultural income and total income of farmers. The sample of the study consists of 1000 farmers. Data came from field survey and multistage random sampling technique was used for the collection of data. The results indicated that the impacts of extension contact coefficients on crop income, nonagricultural income are positive and significant. However, the impacts of extension contact coefficients are not significant in the cases of livestock, fisheries, miscellaneous and agricultural incomes. But it does not mean that agricultural extension has no reward in Bangladesh. The sample data indicates that the impact of extension contact on total income of farmers is positive and significant. The study concludes that agricultural extension is necessary to raise the income of farmers.
Показать больше [+] Меньше [-]Antioxidant and Free Radical Scavenging Activity of Trigonella foenum-graecum L, Murraya koenigii , Coriandrum sativum and Centella asiatica Полный текст
2016
Sanghamitra Dutta | Debanita Roy | Archisman De | Camellia Dutta | Swagata Bhattacharya
Antioxidants are naturally occurring substances that combat oxidative damage in biological entities. An antioxidant achieves this by slowing or preventing the oxidation process that can damage cells in the body. It does this by getting oxidized itself in place of the cells. The aim of the present study was to evaluate the in vitro antioxidant and free radical scavenging activities of aqueous and 95% methanol leaf extracts of four herbs viz. Trigonella foenum-graecum L, Murraya koenigii, Coriandrum sativum and Centella asiatica which have frequent use in Indian cuisine. Both aqueous and 95% methanol leaf extracts have shown significant amount reducing power. Both aqueous and 95% methanol leaf extracts of Coriandrum sativum had significant DPPH radical scavenging activity with IC50 value of 0.21± 0.3 mg/L and 0.176 ± 0.008 mg/L respectively. The aqueous leaf extract of Trigonella foenum-graecum L showed low scavenging activity. Among all the leaf extracts, the aqueous leaf extract of Centella asiatica has exhibited significantly high NO radical scavenging activity (80%) with IC50 value of 0.11 ± 0.17 mg/L. The aqueous leaf extracts of the samples have showed significantly high superoxide radical scavenging activity. The activity was maximum for the aqueous leaf extract of Centella asiatica, IC50 value is 4.36 ± 0.41 mg/L. anti lipid peroxide activities were very high ( 90 %) for aqueous leaf extracts of Coriandrum sativum (IC50 = 0.064 ± 0.85 mg/L) and Centella asiatica (IC50 = 0.066 ± 0.9mg/L) at a concentration of 0.16 mg/L. The aqueous leaf extracts of the samples were found to contain large amounts of flavonoids and phenolic compounds and exhibited high antioxidant and free radical scavenging activities. These in vitro assays indicate that these plant extracts are significant source of natural antioxidants which might be helpful in preventing the progress of various oxidative stresses.
Показать больше [+] Меньше [-]Productivity Problems and Remedies for Cereals Farming in Sivas Полный текст
2016
Sancar Bulut
Insufficient capital an technical sources of agricultural enterprises, old-ages and low educational levels of population dealing with agricultural activities, lack of technical stuff and resultant insufficiencies of extension services and adverse climate conditions experienced time to time all negatively influence cereal farming and productivity levels in Sivas province. Large fallow lands over monoculture cereal lands, insufficient certified seed utilization, improper soil tillage and seedbed preparation practices, delay of winter sowings or high summer sowing rates (especially in barley), insufficient chemical fertilizer uses because of high fertilizer costs, lack of scientific research on cereals and untimely weed control practices also significantly limit cereal yields. All these aforementioned theoretical and economical deficiencies should be eliminated to have high yield levels in cereal farming of Sivas province.
Показать больше [+] Меньше [-]PGPR Potentially Improve Growth of Tomato Plants in Salt-Stressed Environment Полный текст
2016
Mariam Zameer | Hina Zahid | Bushra Tabassum | Qurban Ali | Idress Ahmad Nasir | Muhammad Saleem | Shahid Javed Butt
Plant growth promoting rhizobacteria are colonized bacterial species that has the capability to improve plant growth by certain direct and indirect means. Environmental factors including both biotic and abiotic stresses are among the major constraints to crop production. In the current study, the effectiveness of microbial inoculation (Bacillus megaterium) for enhancing growth of tomato plants under salt stress conditions has been investigated. Significant improvement in shoot length, root length, leaf surface area, number of leaves, total weight of the shoot and root was observed in tomato plants inoculated with zm7 strain post 15 and 30 days of its application. Zm3, Zm4 and Zm6 strains improved the morphological parameters as compared to the control. Chlorophyll content a, chlorophyll content b, anthocyanin and carotenoid content was increased in tomato plants subjected to Zm7, Zm6 and Zm4 strains. Stress responsive genes; metallothionein and glutothion gene were found highly expressed in Zm7 treated tomato plants as compared to control, untreated plants. Significant correlation of anthocyanin was reported for carotenoids, chlorophyll-b, shoot weight and total weight of seedling while carotenoids were significantly correlated with leaf surface area, root length, chlorophyll-b and anthocyanin. Overall, Zm7 strain proved best for improvement in salt stressed plant’s morphological parameters and biochemical parameters as compared to control, untreated plants.
Показать больше [+] Меньше [-]Adsorption-Desorption of Hexaconazole in Soils with Respect to Soil Properties, Temperature, and pH Полный текст
2016
Maznah Zainol | Halimah Muhamad | Ismail Bin Sahid | Idris Abu Seman
The effect of temperature and pH on adsorption-desorption of fungicide hexaconazole was studied in two Malaysian soil types; namely clay loam and sandy loam. The adsorption-desorption experiment was conducted using the batch equilibration technique and the residues of hexaconazole were analysed using the GC-ECD. The results showed that the adsorption-desorption isotherms of hexaconazole can be described with Freundlich equation. The Freundlich sorption coefficient (Kd) values were positively correlated to the clay and organic matter content in the soils. Hexaconazole attained the equilibrium phase within 24 h in both soil types studied. The adsorption coefficient (Kd) values obtained for clay loam soil and sandy loam soil were 2.54 mL/g and 2.27 mL/g, respectively, indicating that hexaconazole was weakly sorbed onto the soils due to the low organic content of the soils. Regarding thermodynamic parameters, the Gibb’s free energy change (ΔG) analysis showed that hexaconazole adsorption onto soil was spontaneous and exothermic, plus it exhibited positive hysteresis. A strong correlation was observed between the adsorption of hexaconazole and pH of the soil solution. However, temperature was found to have no effect on the adsorption of hexaconazole onto the soils; for the range tested.
Показать больше [+] Меньше [-]Use of Copra Meal in Poultry and Ruminant Nutrition Полный текст
2016
Tugay Ayasan
Copra meal (CM) is an important feed ingredient and the by-product of the oil extraction from dried coconut kernels. This product, although copra meal has a moderate protein content (15-25%); because of a high cellulose content (11.63-16.00%) and some limiting amino acids (particularly lysine and methionine), limits its use as a basic source of protein in poultry due to insufficient. Copra meals are more suitable common supplements as both an energy and protein source for ruminants. In this paper, nutritional researches performed with the copra meal usage on poultry and ruminant species have been reviewed.
Показать больше [+] Меньше [-]The Length-Weight, Length-Length Relationship and Condition Factor of Angora Loach, Oxynoemacheilus angorae (Steindachner, 1897) Inhabiting Kılıçözü Stream in Kızılırmak River Basin (Central Anatolia-Turkey) Полный текст
2016
Okan Yazıcıoğlu | Ramazan Yazıcı
In this study, length-weight relationship (LWR), length- length relationship (LLR) and condition factor (K) of Angora loach, Oxynoemacheilus angorae were determined. A total of 103 specimens were sampled from Kılıçözü Stream in 2014. The length and weight of specimens were ranged 3.5-9.8 cm and 0.38-6.58 g, respectively. Length-weight relationships for female, male and all samples were found as W= 0.01056.TL2.896 (r²= 0.923), W= 0.00963.TL2.940 (r²= 0.978) and W= 0.00987.TL2.929 (r²= 0.963), respectively. LWRs indicated an isometric growth in female, male and all samples. The values of Fulton’s condition factor (K) ranged from 0.699 to 1.246 for females and from 0.654 to 1.072 for males. All length-length relationships were statistically significant.
Показать больше [+] Меньше [-]The biology, economy, hunting and legislation of edible Frogs (Ranidae) Intended for Export in Turkey Полный текст
2016
Hülya Şereflişan | Ahmet Alkaya
The frogs production is done on the basis of fully hunting, an important export product in Turkey. The frogs are almost no domestic consumption. The frogs are exported to France, Italy, Switzerland, Lebanon, Greece and Spain by five companies a processed form as live frog, frozen frog legs and chilled frog legs. In Turkey, some regulations related to hunting frogs and exports are prepared by under the Ministry of Agriculture and Rural Affairs General Directorate of Protection and Control. The hunting frogs is banned by 3/1 the Commercial Fisheries regulating the hunting notification. These prohibitions are designed to be different for each province. The provinces are permitted for frogs hunting by the legislation in Adana, Afyonkarahisar, Balıkesir, Bingöl, Bursa, Edirne, Bursa, Istanbul and Yalova. Frogs were exported in different amounts (kg) with different price in every year during the last ten years. The highest amounts of the frogs with the lowest of price were exported in 2013. Prey weight is shrinking due to overfishing. In this case, the price of export materials has got significantly negative effects. As a result, the ban on hunting and restrictive measures for protection should be taken seriously in some of the provinces. Hunting ban is absolutely necessary in Turkey. In many countries including Turkey, in order to ensure sustainability, it is important to do the frog breeding.
Показать больше [+] Меньше [-]Application of Rosemary (rosmarinus officinalis l.) Based Natural Antioxidant During Deep Fat Frying of Noodle Полный текст
2016
Navneet Singh Deora | Aastha Deswal | Sanjith Madhavan
The aim of this study was to evaluate the effects of a natural antioxidant derived from rosemary extract on the stabilization of palmolein oil during deep-fat frying of Noodles. Palmolein oil with tertiary butylhydroquinone (TBHQ), a synthetic antioxidant and palmolein without antioxidant were used as positive controls. Thermo-oxidative transformation were measured according to various physical and chemical parameters. Total polar compounds (TPC), free fatty acids (FFA) were measured during the study. All the parameters evaluated in the study increased with the number of frying cycles. The order of effectiveness of antioxidants for inhibition of palmolein oil degradation in deep-noodles was: PRESOL (rosemary based extract) > TBHQ > Control. In terms of oil consumption, it was observed that noodles fried in oil with rosemary extract had lower value of oil consumption as compared to TBHQ and control. The TBHQ degradation kinetics was also evaluated with frying cycle. It showed an exponential decay with increase in frying cycles. Also samples containing natural antioxidant had a least changes in the colour as compared to TBHQ and control at the end of frying cycle.
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