scholarly journals Nutritional and sensory value of conventionally vs organically grown Chinese radish (Raphanus sativus L. var. longipinnatus)

2014 ◽  
Vol 41 (No. 2) ◽  
pp. 64-70
Author(s):  
M. Jurica ◽  
K. Petříková

The nutritional and sensory value of Chinese radish, cv. Jarola F1, grown in organic and conventional systems was evaluated. The experiments were based on certified organic land and conventional land of the Czech University of Life Sciences Prague at the experimental station of Troja. Radish was grown in two spacings. Radish from the organic cultivation system exhibited a significantly lower dry matter content compared to the conventional production, 62.4 g/kg <br /> and 68.9 g/kg, respectively. This can be explained by growing under unwoven textile. Furthermore, radish cultivated organically had a significantly lower content of monosaccharides (17.2 mg/kg, while the conventional production contained 26.1 mg/kg) and significantly higher contents of nitrates. The content of vitamin C in organic production tended to be higher (212 mg/kg, in conventional production 169 mg/kg). The crude fibre content or the content of minerals was not significantly affected by the growing system. Growing spacing did not affect the nutritional value. Organically produced radish had better sensorial evaluation. &nbsp;

2014 ◽  
Vol 4 (1) ◽  
pp. 22-28
Author(s):  
T. N. Mandal ◽  
T. P. Gautam

Altogether 19 fodder climbers were collected with local information for their quality, feeding season and preference by livestock from Sunsari district, Nepal. Fodder climbers were distributed under 15 angiospermic families. Among them, 6 climber species were analyzed for dry matter, crude protein, ether extract, crude fibre, N-free extract, total ash and mineral contents (K, Ca, and P). Dry matter content ranged from 24.12 to 45.43%. Crude protein content showed slight variation. Ether extract ranged from 2.13- 4.23%, while Crude fiber content ranged between 18.62 and 22.52%. N-free extract showed narrow variation in the content while Total ash content exhibited a wide variation ranging from 5.67 to 11.52%. Among the minerals, Phosphorus showed distinct variation in the content from 0.19 to 0.46%. Fodder quality assessed by local people was compared with the result of chemical composition. On the basis of local information and chemical composition, Hedera nepalensis and Hedyotis scandens were considered as very good fodder climbers.


Author(s):  
Adata A. Jumbo ◽  
M. O. Wegwu ◽  
D. C. Belonwu ◽  
B. M. Onyegeme- Okerenta

Aims: This study investigated the physicochemical assessment of Rivers Kaa and Bodo in Ogoniland, as well as the proximate profile of selected fin and shell fish from these Rivers. Study Design: Random sampling. Place and Duration of Study: Kaa and Bodo communities of Ogoniland, between August and November 2014. Methodology: The physicochemical analysis; pH, temperature (T), biological oxygen demand (BOD), chemical oxygen demand (COD), dissolved oxygen (DO), total suspended solids (TSS), total dissolved solids (TDS), conductivity (C), salinity (S) and total hydrocarbon content (THC), were done. The results were compared to FEPA and APHA permissible limits. Proximate composition was determined using Association of Official Analytical Chemist standard analytical methods. Results: Physicochemical analysis results showed that T (26.5±.010), (26.8±.006) and TSS (8.68±.006), (12.5±.006) for Kaa were lower than Bodo (sp≤0.05), S (7.20±.021), (8.40±.010) and THC (0.25±.015), (3.00±.040) were both lower for Kaa than Bodo, at (p≤0.05), BOD was higher for samples collected from Bodo than samples collected from Kaa (188±.234), (259±.690). The TDS and Conductivity were both higher for samples from Bodo than those from Kaa, while pH and DO were higher for samples collected from Kaa than samples collected from Bodo. The moisture content for all samples collected from Kaa (63.7±.289), (72.5±.488), (75.1±.973), (67.4±.455), were significantly lower at p≤0.05 than the moisture content for samples from Bodo (68.7±.514), (80.6±.476), (86.2±.790), (74.5±.514) indicating that the samples from Kaa are better sources of protein, lipid, and energy than samples from Bodo. The protein, lipid, crude fibre, ash and dry matter content of all samples from Kaa were significantly higher (p≤0.05) than those for samples from Bodo. Conclusion: These findings suggest a contamination of the study sites particularly Bodo with petroleum products. Furthermore, it shows that the protein contents in all samples from Bodo were below the recommended standards, suggesting that the consumption of fishes from the study area particularly Bodo, is unhealthy.


Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1420
Author(s):  
Ingrid Bender ◽  
Liina Edesi ◽  
Inga Hiiesalu ◽  
Anne Ingver ◽  
Tanel Kaart ◽  
...  

Organic production is one of the fastest growing food sectors globally. However, average yield in organic vegetable production is up to 33% lower than in conventional production. This difference could be due to higher fertilization rates in conventional, compared to organic, farming. We aimed to compare yield and quality characteristics of carrots produced under equal nitrogen fertilization rates over four years in organic and conventional conditions. We found a 14.5% higher marketable, and 10.0% lower discarded, yield in the organic compared to the average conventional treatments. In addition, carrots managed organically had 14.1% lower nitrate and 10.0% higher vitamin C content than carrots managed conventionally. There were no convincing effects of cultivation system on the nitrogen, total sugar, or dry matter content of carrots. Organically managed carrots were free of pesticide residues, while several residues were found in carrots managed conventionally. Our study reveals that organic management of carrots may exceed that of conventional methods in yield and several quality characteristics, while being free of pesticide residues. Organic fertilizer gave an advantage over mineral fertilizer, when equal rates of nitrogen were used in both production systems.


2012 ◽  
Vol 20 (2) ◽  
pp. 63-70 ◽  
Author(s):  
Piotr Brzozowski ◽  
Krzysztof Zmarlicki

Abstract Certified organic farm area in Poland increased 8.5 fold during the 2003-2010 time period to 518 thousand ha, which constituted 2.8% of the arable land. The production costs and profitability of the organic fruit production of apples, strawberries, and sour cherries were evaluated and compared to conventional production of those fruits. The research was based on data from thirty-two commercial fruit farms; twenty farms with conventional production, and twelve with organic production. The main problems associated with organic production were the costs of weed control and soil cultivation. The conventional production of apples turned out to be slightly more profitable than the organic production. The organic production of sour cherries was not profitable. In the case of strawberries, it was the opposite - the organic production gave a better financial outcome than the conventional one


1962 ◽  
Vol 4 (2) ◽  
pp. 227-232 ◽  
Author(s):  
T. L. Dodsworth ◽  
C. Ball

Results are given from two digestibility trials in which the following three diets were fed to sheep: (i) grass only, (ii) grass+5 oz. cotton cake daily, (iii) grass+10 oz. cotton cake daily.In the first trial the average dry-matter content of the grass was low (approx. 14%), intake was low and the supplements were eaten in addition to the grass. In the second trial where the dry-matter content (approx. 20%) of the grass and the intake were higher, the cake supplements reduced herbage consumption.The feeding of cake did not have any significant effect on the dry-matter percentage in the faeces but depressed the digestibility of the dry matter, crude protein, crude fibre and nitrogen-free extract in the diets including cake and reduced their starch equivalent and total digestible nutrient values.No evidence was found to support the recommendation that undecorti-cated cotton cake should be fed to grazing animals.


1968 ◽  
Vol 71 (1) ◽  
pp. 67-71 ◽  
Author(s):  
W. L. Johnson ◽  
W. A. Hardison ◽  
A. L. Ordoveza ◽  
L. S. Castillo

SummaryDry-matter intake (D.M.I.) fromPanicum maximum(guinea grass) was studied in digestibility trials with Holstein and water buffalo bulls and in a feeding trial with lactating cows.Differences in voluntary D.M.I. per unit body weight0·73between the Holsteins and water buffaloes were not significant. Average D.M.I. for all bulls in all main trials was 2·16 kg per 100 kg B.W. Average D.M.I. by the lactating cows was 2·08 kg per 100 kg B.W., for all practical purposes the same as for the bulls.D.M.I. was not related to stage of maturity or season of harvest of the guinea grass. Intakes of digestible protein, T.D.N., and digestible energy in different seasons and at different growth stages were related to the percentage of those nutrients in the grass.Correlation coefficients were 0·68 between D.M.I. and B.W.0·73, 0·59 between D.M.I. and T.D.N. content, and 0·58 between D.M.I. and crude protein content, D.M.I. was not closely related to dry-matter content (r= 0·30) or crude fibre content (r= 0–01) of the guinea grass.


2018 ◽  
Author(s):  
Jayalakshmi Mitnala

In India, with less than 42,000 ha under certified organic farming during 2003-04, the area under organic farming grew by almost 25 fold, during the next 5 years, to 1.2 million ha during 2008-09. Later, however, the area under certified organic farming has fluctuated between 0.78-1.1 million ha. Presently, about 0.7 million ha area is under certified organic cultivation and India ranks 4th in terms of largest areas of organic agricultural land (Willer and Julia, 2016). During 2014-15, India had the largest number of organic producers of about 0.65 million and accounted for 1.35 million tons of certified organic produce. India exported 135 products during 2014-15 with the total volume of 263687 MT. The organic food export realization was around 298 million USD.


Author(s):  
M. N. Abua ◽  
M. A. Ittah ◽  
E. E. Obok ◽  
G. A. Iwo ◽  
R. E. Edugbo ◽  
...  

The present study was aimed to determine the variations in nutritional qualities of 15 mutant lines and two landraces of ginger (Zingiber officinale). Fifteen (15) gamma (γ)-ray induced mutants lines and two landraces of ginger were planted in 2017 early cropping season in the Teaching and Research Farm, Department of Crop Science, Faculty of Agriculture, Forestry and Wildlife Resources Management, University of Calabar, Calabar, Nigeria. To evaluate the nutritional qualities of these seventeen ginger genotypes at maturity, proximate analysis was carried out in the Biochemistry Laboratory of the National Root Crop Research Institute Umudike, Abia State, Nigeria. Using standard and official protocols of the Association of Official Analytical Chemists (AOAC). Results showed that the ginger lines varied significantly (P < 0.01) in all their proximate attributes. The moisture content ranged from 10.13% (UG1) to 12.95% (UG2). Mean dry matter was 88.89%; UG1 and UG2 had the highest (89.89%) and lowest (87.05%) dry matter content, respectively. Mean crude protein was 7.74%; UG2-9-01 and UG2-11-03 had the highest (8.25%) and lowest (7.29%) crude protein respectively. UG1-5-38 and UG1-5-22 had the highest (8.12%) and lowest (6.41%) crude fibre content respectively. The oleoresin content ranged from (6.25%) in UG2-9-01 to (9.09%) in UG1-11-07. UG1-5-04 and UG1-5-22 had the highest (2.88%) and lowest (2.22%) ash content respectively. UG2-9-01 had the highest carbohydrate content of (65.10%). While UG1-5-52 had the lowest (61.27%) The result showed that the ginger lines used in this study had high mean carbohydrate (62.85%) and protein (7.74%) contents as such can be used as supplementary sources of these nutrients for human and livestock. UG1-7-24, UG1-11-07 and UG1-5-18 with high oleoresin contents of 9.11%, 9.09% and 9.05% respectively are recommended to ginger breeders as useful genotypes for improving other ginger lines through micropropagation techniques especially when breeding for oleoresin quality, which is an important quality of ginger. In conclusion, further evaluation and testing of these ginger lines is recommended.


1998 ◽  
Vol 32 (3) ◽  
pp. 276-283 ◽  
Author(s):  
Peter Wen-Shyg Chiou ◽  
Bi Yu ◽  
Chang Lin

Trials were conducted to study the effect of dietary fibre on performance and nutrient digestibility in growing rabbits. The basal diet was supplemented with 12% cellulose, pectin, lignin, or alfalfa, in four different treatments. Twenty-four 4-week-old Californian male rabbits were randomly allocated into four groups and placed in individual cages. The lignin supplement severely affected both feed intake and performance, pectin second, with dietary cellulose having the least effect. Dietary lignin significantly decreased the digestibility of crude protein, gross energy and dry matter content ( P < 0.05). Rabbits on the pectin supplemented diet digested dry matter, crude fibre and neutral detergent fibre (NDF) better ( P < 0.05) than other treatment groups. On the other hand, rabbits in the lignin group digested crude fibre, acid detergent fibre (ADF) and NDF significantly less well than rabbits in other groups ( P < 0.05). Dietary lignin also significantly decreased the caecal concentration of volatile fatty acids (VFA, P < 0.05) but did not significantly affect the molar ratios of the VFAs among treatment groups. The turnover rate of the marker, chromic oxide, in the gastrointestinal (GI) tract of rabbits was 64.94, 51.81, 44.05 and 29.59 h in the pectin, alfalfa, lignin and cellulose treatment groups, respectively. The rate of turnover in the digestive tract significantly influenced digestibility of fibre components but did not significantly influence caecal fermentation.


2021 ◽  
Vol 23 (2) ◽  
pp. 124-128
Author(s):  
D. ERUVBETINE ◽  
S. A. ADEGBOYEGA

Aerobic fermentation of cassava was carried out to determine the nutrient quality of the final product with a view to optimizing its use in poultry diets. Two varieties of cassava TMS 30572 and OTA were peeled, chipped and heaped for fermentation. Samples were taken at days 0, 3, 5 and 7 for determination of moisture, crude protein, crude fibre, ether extract and cyanide levels. Fermentation was carried out in both dry and wet seasons. Results showed that major changes in composition were in the moisture content which increased with corresponding decreases in dry mater content with increasing period of fermentation for both seasons studied. Protein content increased up to a period of 3 days after which it declined. A similar trend was observed in both wet and dry seasons. However, it was noted that a higher moisture content with a correspondingly lower dry matter content was reported for all samples in the wet season when compared to their counterparts in the dry season. Cyanide content was reduced with an increasing period of fermentation in all samples irrespective of variety and season. Further studies are recommended to investigate the possibility of increasing protein content by fermentation.


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