scholarly journals Evaluation of Physico-Chemical Composition in Bulbs of Red, Yellow, and White Onion (Allium Cepa L.) Genotypes of Sub-Tropical India

2020 ◽  
Vol 49 (4) ◽  
pp. 483-490
Author(s):  
I. Kaur ◽  
N. Chawla ◽  
A.S. Dhatt ◽  
M. Kaur
Keyword(s):  
Allium Cepa ◽  
Dry Matter ◽  
Quality Parameters ◽  
Tropical Region ◽  
Fresh Weight ◽  
Correlation Studies ◽  
Physico Chemical ◽  
Allium Cepa L ◽  
Chemical Attributes ◽  
Better Than

In this study, thirty onion (Allium cepa L.) genotypes grown in sub-tropical region of India were analysed for different physico-chemical attributes. There were significant differences among genotypes, and the onion genotypes showed a tendency to be classified according to different colours. The cultivars of the same colour exhibited similar tendencies in terms of accumulating most of the analysed components. About 1.78 fold variation in dry matter (%) and 2 fold variation in fresh weight per bulb were recorded among coloured onions. Red genotype D-888-B possessed maximum contents of TS and NRS, while the yellow coloured genotype POH-5 accumulated highest RS and lowest NRS contents. Maximum values of fructans (3.68 g/100 g DW), AIS (6 g/100 g DW), protein (10.61 g/100 g DW), and FAA (4.24 g/100 g DW) were also found in red coloured genotypes D-715-B, D-97-B, PR-305, and D-PS-121-B, respectively. Proline content in different genotypes was found to vary about 6.9 fold. The correlation studies showed a positive relationship between most of the quality parameters. Our results suggested that red group genotypes were better than yellow and white groups for all the studied parameters except for RS, which makes red genotypes more suitable for processing purposes.

scholarly journals Health-Promoting Constituents and Selected Quality Parameters of Different Types of Kimchi: Fermented Plant Products

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Anna Korus ◽  
Emilia Bernaś ◽  
Jarosław Korus
Keyword(s):  
Dietary Fiber ◽  
Chinese Cabbage ◽  
Dry Matter ◽  
Raw Materials ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Fresh Weight ◽  
Total Dietary Fiber ◽  
Health Promoting ◽  
High Level

The aim of this study was to evaluate the quality and health-promoting constituents of several variants of kimchi obtained from Chinese cabbage, kohlrabi, white radish, and cucumbers. The level of dry matter, total soluble solids, ash, total acidity, pH, dietary fiber, and vitamins C, B1, and B2, as well as total polyphenols (TP) and antioxidant activity AA (ABTS, DPPH) in kimchi, were determined. In addition, color parameters were determined ( L ∗ , a ∗ , b ∗ , C ∗ , and h o ). Kimchi with the highest proportion of Chinese cabbage (63%) had the highest levels of dry matter (11.01 g), ash (2.57 g), and vitamins: C, B1, and B2 (51 mg, 52 μg, and 242 μg, respectively), expressed per 100 g of fresh weight. In addition, this product showed the highest total AA of 132.3 μmol Tx/g (ABTS) and 49.7 μmol Tx/g (DPPH) due to its high level of TP (194 mg/100 g). Cucumber-derived kimchi (85%) also had a high content of TP (147 mg/100 g) and high AA of 88.7 μmol Tx/g (ABTS) and 36.3 μmol Tx/g (DPPH). Additionally, stuffed kimchi from kohlrabi (88%) had the highest amounts of total dietary fiber, 3.65 g/100 g fresh weight. In all products, red ( a ∗ ) and yellow ( b ∗ ) were the dominant colors, with values of L ∗ ranging between 32.63 and 53.16. In general, our studies have shown that depending on the raw materials used, kimchi is a good source of dietary fiber but also vitamins and polyphenols.

The effect of growth temperature on dry weight and carbohydrate content of onion (Allium cepa L. cv. Creamgold) bulbs

1982 ◽  
Vol 33 (3) ◽  
pp. 559 ◽  
Author(s):  
BT Steer
Keyword(s):  
Allium Cepa ◽  
Growth Temperature ◽  
Dry Weight ◽  
Carbohydrate Content ◽  
Controlled Environment ◽  
Fresh Weight ◽  
Tissue Water ◽  
Total Carbohydrate ◽  
Glucose Content ◽  
Allium Cepa L

Onion bulbs (Allium cepa L. cv. Creamgold), grown in a phytotron from seed, had a dry weight as percentage of fresh weight that decreased as growth temperatures increased from 22/16 to 33/28�C day/night. There were no significant differences between growth temperatures in the fructose, sucrose or fructan content and, although glucose content was higher at high temperatures, there was no correlation of total carbohydrate content with growth temperature. The sum of fructose, glucose and sucrose per unit tissue water was constant between temperatures, suggesting that the mono- and disaccharide content may control the bulb water content. These results, from controlled-environment tests, predict that in the field the best yield of dry weight as a percentage of fresh weight will be obtained at low growth temperatures.

Correlation Studies for Bulb Yield and Yield Contributing Traits among Onion (Allium cepa L.) Genotypes

2018 ◽  
Vol 9 (4) ◽  
pp. 1-6
Author(s):  
A. A. Gulumbe ◽  
L. Abubakar ◽  
B. M. Sokoto ◽  
A. A. Aliero
Keyword(s):  
Allium Cepa ◽  
Correlation Studies ◽  
Allium Cepa L ◽  
Bulb Yield

scholarly journals Loss of seed viability in onion (Allium cepa L.) in relation to degradation of lipids during storage

2020 ◽  
Vol 12 (4) ◽  
pp. 635-640
Author(s):  
Vishwanath Rohidas Yalamalle ◽  
Nilesh Nivrutt Gaikwad ◽  
Dinesh Manohar Ithape ◽  
Ashok Kumar ◽  
Kalyani Gorrepati ◽  
...  
Keyword(s):  
Allium Cepa ◽  
Oil Content ◽  
Seed Oil ◽  
Membrane Integrity ◽  
Seed Viability ◽  
Chemical Properties ◽  
Ambient Storage ◽  
Physico Chemical ◽  
Allium Cepa L ◽  
One Year

Onion seeds have one of the lowest longevity among the cultivated crops as it loses viability within a year. The unmarketable seeds have no reported food value or feed value. Onion seeds contain considerable oil content which has potential industrial utility. The present study reports the changes in the quality of seed oil extracted from seeds stored for one year (2019-2020), after which the seeds were unmarketable due to low germination. The physico-chemical properties of seed oil were studied in four onion (Allium cepa L.) varieties (Bhima Safed, Bhima Super, Bhima Dark Red and Bhima Shakti) by standard analytical test. The per cent oil content varied from 12.94% - 16.02% and storage resulted in 0.64% loss in seed oil content. The mean seed germination in freshly harvested seeds was 80.50%, which declined to 52.33% after one year of ambient storage. The electrical conductivity, which measures the membrane integrity increased by 108.60% in one-year-old seeds. The physico-chemical properties of the seed oil deteriorated with the age of the seed. In comparison to the control, the acid values and peroxide values of the seed oil increased by 51.11% and 12.90% respectively, while saponification value decreased by 36.18%. Among the varieties, Bhima Dark Red had the highest degradation in the seed storability and vigour, which also had the highest deterioration in the lipid quality. The present study reports for the first time the degradation of seed lipids during ageing in onion which might be contributing to the poor storability of onion seeds. 

scholarly journals Study on Different Methods of Weed Management in Onion (Allium cepa L.)

2019 ◽  
pp. 1-7
Author(s):  
Sheela Barla ◽  
R. R. Upasani
Keyword(s):  
Allium Cepa ◽  
Cover Crops ◽  
Weed Management ◽  
Dry Matter ◽  
Growth Stages ◽  
Plastic Mulch ◽  
Net Return ◽  
Pooled Data ◽  
Allium Cepa L ◽  
Hand Weeding

A weed management study on onion (Allium cepa L.) was conducted at Birsa Agricultural University, Jharkhand, India during winter season of 2016-17 and 2017-18 in a randomized block design comprised of nine weed control treatments consisting plastic mulch, available weeds mulch, straw mulch, cover crops (Fenugreek), oxyfluorfen 0.5 kg/ha pre-emergent (PE), pendimethalin 1.0 kg/ha PE, mechanical weeding by Dutch hoe, hand weeding at 20, 40, 60 days after transplanting (DAT) and weedy check. Hand weeding at 20, 40 and 60 DAT was most effective in reducing weed dry matter however it was similar to plastic mulch at all the growth stages of crop during 2016-17, 2017-18 as well as in pooled except at 60 DAT in 2016-17. Hand weeding reduced weed dry matter to the extent of 75.83 and 84.83 percent during 2016-17, 100 and 89.21 percent during 2017-18, 98.64 and 88.62 percent under pooled data at 30 and 60 DAT respectively and the corresponding reduction in weed dry matter due to application of plastic mulch was 70.73 and 40.32 percent during 2016-17, 100 and 93.64 percent during 2017-18, 98.37 and 86.52 percent under pooled data at 30 and 60 DAT respectively, compared to weedy check. Application of plastic mulch recorded 300 and 38 percent higher onion yield during 2016-17, 1959 and 117 percent during 2017-18, 576 and 70 percent higher under pooled data compared to weedy check and hand weeding respectively. Plastic mulch also recorded maximum net return 364136, 380185 and 372160 /ha during 2016-17, 2017-18 and under pooled data similar to net return with application of oxyfluorfen 0.25 kg/ha PE, pendimethalin 1 kg/ha PE and hand weeding during 2016-17 while under pooled data maximum B:C ratio was with plastic mulch and was similar to oxyfluorfen 0.25 kg/ha PE, pendimethalin 1 kg/ha PE and hand weeding.

scholarly journals Influence of Duration of Agroforestry on Physico-Chemical Soil Quality Parameters in Machakos County, Kenya

2020 ◽  
Keyword(s):  
Bulk Density ◽  
Soil Quality ◽  
Quality Parameters ◽  
Sub Saharan Africa ◽  
Sand Particle ◽  
Tropical Region ◽  
Exchangeable Bases ◽  
Agroforestry Practice ◽  
Physico Chemical ◽  
Chemical Soil

The role of agroforestry in improving soil quality is well appreciated. However, there is debate as to how duration of agroforestry practice affects soil quality especially in the tropical region of Sub Saharan Africa where adoption of the practice is fairly recently. Therefore, objective this study was to investigate the influence of duration of agroforestry on physico-chemical soil quality parameters. The study was conducted using survey research design from a sample of 73 individual farmers, selected using stratified and random sampling. Soils were sampled from adopters and non adopters using soil auger. At least five sub-samples of soils were collected from each of the farmers and the soil mixed to get an integrated soil sample for analysis. The soil were packaged in two-kg khaki papers and taken to the laboratory for further physical attributes (sand, clay, silt and bulk density) and chemical analyses (pH, TN, TP, TOC, C/N and C/P). The exchangeable bases (K, Ca, Mg and Na) as well as micronutrients (Mn, Cu, Fe and Zn) were also analyzed. The results indicated that proportion of sand particles was significantly (P < 0.05) higher among non adopters compared to adopters while silt and bulk density was significantly (P < 0.05) higher among the adopters compared to the non adopters. Sand particle decreased with increasing duration of agroforestry adoption while proportion of silt and bulk density showed a significant increase in tandem to stand duration of agroforestry. The TN, TOC and C/P ratio was significantly (P < 0.05) higher among adopters and increased consistently with age of adoption, while C/N was higher among non adopters and decreased with increasing age of tree stand and duration of agroforestry. The trend in exchangeable bases and mineral contents in the soil were similar where higher concentrations occurred among adopters and displayed an increase with regard to length of adoption of agroforestry. The current study lends support to assertion that duration of agroforestry positively improves soil quality and therefore urges for mass adoption of the agroforestry practice to enhance increased agricultural productivity.

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