scholarly journals Phytochemistry of Allium cepa L. (Onion): Its Nutritional and Pharmacological Importance

2021 ◽  
Vol 5 (3) ◽  
Author(s):  
Nida Mahmood ◽  
Muazzam Ali Muazzam ◽  
Muhammad Ahmad ◽  
Shabbir Hussain ◽  
Warda Javed
Keyword(s):  
Allium Cepa ◽  
Brain Cancer ◽  
Positive Response ◽  
Onion Bulb ◽  
Organosulfur Compounds ◽  
Human Beings ◽  
Sodium Potassium ◽  
Phytochemical Composition ◽  
Allium Cepa L ◽  
The World

The present study was conducted to review the phytochemical composition, nutritional and pharmacological values of Allium cepa L. (Onion). Attempts have been made to compile the findings of 75 articles into a single manuscript. Onion is cultivated all over the world. The onion bulbs are comprised of polysaccharides including peptides, fructans, flavonoids (mostly quercetin), saccharose and organosulfur compounds having salutary effects on human health. The onion in the diet gives us a positive response in nutritional manner. The nutritional contents of onion bulb are crude oil, vitamin E, sodium, potassium, and zinc. The onion bulb has the potential to reduce the problem of stomach cancer, osteoporosis, and brain cancer in human beings. In addition, onion is antidiabetic, anti-inflammatory, anti-scar, antispasmodic, antiseptic, anti-genotoxic, anti-mutagenic, diuretic,anti-parasitic, antimicrobial, antipyretic, and Analgesic.

Large scale manufacturing of puree-only edible films from onion bulb (Allium cepa L.): Probing production and structure–processing–property correlations

2020 ◽  
Vol 145 ◽  
pp. 111847 ◽  
Author(s):  
Diogenes dos Santos Dias ◽  
Caio Gomide Otoni ◽  
Robson Rosa da Silva ◽  
Andreia Bagliotti Meneguin ◽  
Luiz Henrique Capparelli Mattoso ◽  
...  
Keyword(s):  
Allium Cepa ◽  
Large Scale ◽  
Edible Films ◽  
Onion Bulb ◽  
Processing Property ◽  
Allium Cepa L ◽  
Property Correlations

scholarly journals Farmer's Stance on Decreasing Production of Local Red Onion (Allium cepa L.) Farming in Buttu Pamboang Village, Majene

2020 ◽  
Vol 1 (1) ◽  
pp. 25-29
Author(s):  
Ikawati Karim
Keyword(s):  
Allium Cepa ◽  
Likert Scale ◽  
Production Data ◽  
Onion Plant ◽  
Foreign Markets ◽  
Commercial Farming ◽  
Allium Cepa L ◽  
The World ◽  
Strategic Role ◽  
Commodity Trading

In general, farmers in Buttu Pamboang Village in Majene District in carrying out the cultivation of onion plants have not applied the rules of cultivation correctly and precisely, resulting in a decline in crop. Agricultural commodities have a strategic role in realizing government policy to increase foreign exchange acquisition. The toughness of the role in the world trade globalization era is faced with the competition of commodity quality, both in domestic and foreign markets. This Era is characterized by the increasingly free commodity trading between countries in the world including vegetable commodities. In Indonesia, the local red onion plant (Allium cepa L.) has been cultivated by farmers as a commercial farming. However, the presence and demand of red onion that continue to increase every year cannot be followed by the increase in production. Data of the Agricultural office of Pamboang Village, October 2015 that the amount of local red onion productivity ranged from 5-6 tons and the production amount ranged from 10-12 tons with 2 ha of farmland area in 2014. It can be concluded that the production of local red onion in 2015 in the Pamboang Village decreased compared to the previous year, the red onion productivity of 2015 average ranged from 2-3 tons. This research aims to identify the attitude of farmers in Buttu Pamboang Village to decline in production in the onion farming business and know the factors that cause a decline in the production of local red onion in Buttu Pamboang Village in Pamboang District of Majene Regency. To identify the assessment of the farmer's stance, analyzed using Likert scale. The Likert scale is the identification of assessments to measure the attitudes and opinions and perceptions of the person/group on social symptoms. The results of the study proved that the attitude of farmers in Buttu Pamboang Village to the decline of production is good or well received.

scholarly journals Storage diseases of onion under variable conditions

2015 ◽  
Vol 26 (1) ◽  
pp. 45-50
Author(s):  
MS Mahmud ◽  
MS Monjil
Keyword(s):  
Allium Cepa ◽  
Disease Incidence ◽  
Fungal Diseases ◽  
Vegetable Crop ◽  
Local Varieties ◽  
Storage Diseases ◽  
Onion Bulbs ◽  
Cold Room ◽  
Allium Cepa L ◽  
The World

Onion (Allium cepa L.) is an important and familiar spice as well as vegetable crop throughout the world. Storage rot due to various diseases caused by bulb rotting fungi is a major constrain for storing onion year-round in Bangladesh. The fungi associated with onion collected from different markets of Mymensingh, Naogaon and Sathkhira districts of Bangladesh were studied aiming to record the incidence of storage diseases as well as storage variability and conditions on disease incidence of onion. Disease incidence was recorded from storage of the retailers in two local varieties of onion,viz.,Taherpuri, Faridpuri and one Indian variety Pusa Red. Initially, infected onion bulbs were found maximum in Faridpuri and minimum amount was found in Pusa Red. Month-wise disease incidence showed that highest number of infected onion bulbs was found in Pusa Red and lowest number of infected bulbs was found in Taherpuri. Similarly highest disease incidence (%) was recorded in Pusa Red and lowest disease incidence (%) was recorded in Therpuri. Among the different markets average number of fungal infected bulbs was highest in the samples collected from Dhamoirhat bazaar of Naogaon district and lowest in the samples collected from Natun bazaar of Mymensingh district. Highest infected bulbs were found in onions stored in cold room (6°C) followed by Free floor and Bamboo basket. Lowest infected bulbs were found in onions stored in dried sands followed by net-bag and jute bag. Thus, the fungal diseases in storage are higher in large sized onion bulbs than indigenous small sized onions and in cold room (6°C) than net-bag or jute bag.Progressive Agriculture 26:45-50, 2015

scholarly journals Organization of the cytoplasmic reticulum in the central vacuole of parenchyma cells in Allium cepa L.

2015 ◽  
Vol 44 (1) ◽  
pp. 115-122
Author(s):  
Tomasz J. Wodzicki ◽  
Claud L. Brown ◽  
Walter J. Humpherys
Keyword(s):  
Allium Cepa ◽  
Light Microscope ◽  
Onion Bulb ◽  
Central Vacuole ◽  
Physiological Processes ◽  
Allium Cepa L ◽  
Parenchyma Cells ◽  
Probable Significance ◽  
Bidirectional Movement ◽  
Vacuolated Cells

An elaborate and complex cytoplasmic reticulum composed of fine filaments and lamellae ranging from 0.1 to 4 microns in size is revealed by viewing the central vacuole of onion bulb parenchyma cells with the scanning election microscope. The larger cytoplasmic strands, visible with the light microscope, are composed of numerous smaller filaments (some tubular) which might explain the observed bidirectional movement of particles in these larger strands. The finely divided cytoplasmic network of filaments is continuous with the parietal cytoplasm inclosing the vacuolar sap. In these highly vacuolated cells the mass of the protoplast is in the form of an intravacuolar reticulum immersed in the cell sap. The probable significance of the vacuolar sap in relation to physiological processes of the cell is discussed.

scholarly journals Heterosis effect of some onion (Allium cepa L.) characteristics

2013 ◽  
Vol 39 (2) ◽  
pp. 325-339
Author(s):  
Roch W. Doruchowski
Keyword(s):  
Allium Cepa ◽  
Sugar Content ◽  
Onion Bulb ◽  
Allium Cepa L ◽  
Heterosis Effect

The object of the studies in 1977 was a population of 15 F<sub>1</sub> hybrids, 11 F<sub>2</sub> progenies, 16 parental forms (8 malesterile A lines and 3 inbred C lines). Heterosis of onion bulb weight, height, diameter was high. The heterosis of bulb firmness, skin adherence and sugar content was not high. The heterosis of other characteristics was rather low.

scholarly journals Antioxidant potential and α-glucosidase inhibitory activity of onion (Allium cepa L.) peel and bulb extracts

2023 ◽  
Vol 83 ◽  
Author(s):  
S. Masood ◽  
A. ur Rehman ◽  
M. A. Ihsan ◽  
K. Shahzad ◽  
M. Sabir ◽  
...  
Keyword(s):  
Allium Cepa ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Antioxidant Potential ◽  
Onion Bulb ◽  
Onion Peel ◽  
Allium Cepa L ◽  
Food Applications

Abstract Allium cepa L. is a commonly consumed vegetable that belongs to the Amaryllidaceae family and contains nutrients and antioxidants in ample amounts. In spite of the valuable food applications of onion bulb, its peel and outer fleshy layers are generally regarded as waste and exploration of their nutritional and therapeutic potential is still in progress with a very slow progression rate. The present study was designed with the purpose of doing a comparative analysis of the antioxidant potential of two parts of Allium cepa, i.g., bulb (edible part) and outer fleshy layers and dry peels (inedible part). Moreover, the inhibitory effect of the onion bulb and peel extracts on rat intestinal α-glucosidase and pancreatic α-amylase of porcine was also evaluated. The antioxidant potential of onion peel and bulb extracts were evaluated using 2,2-diphenyl- 1-picryl hydrazyl (DPPH), ferric-reducing antioxidant power assay (FRAP), 2,2’-azino-bis- 3-ethylbenzothiazoline-6-sulfonic acid (ABTS) radical scavenging assay, H2O2 radical scavenging activity and Fe2+ chelating activity. Total flavonoids and phenolic content of ethanolic extract of onion peel were significantly greater as compared to that of onion bulb. Ethanolic extract of onion peel also presented better antioxidant and free-radical scavenging activity as compared to the ethanolic extract of bulb, while the aqueous extract of bulb presented weakest antioxidative potential. Onion peel extract’s α-glucosidase inhibition potential was also correlated with their phenolic and flavonoid contents. The current findings presented onion peel as a possible source of antioxidative agents and phenolic compounds that might be beneficial against development of various common chronic diseases that might have an association with oxidative stress. Besides, outer dry layers and fleshy peels of onion exhibited higher phenolic content and antioxidant activities, compared to the inner bulb. The information obtained by the present study can be useful in promoting the use of vegetable parts other than the edible mesocarp for several future food applications, rather than these being wasted.

scholarly journals Structural Changes Induced by Pulsed Electric Fields Increase the Concentration of Volatiles Released in Red Onion (Allium cepa L. var. Red Pearl) Bulbs

Foods ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 368
Author(s):  
Thirawat Tantamacharik ◽  
Sze Ying Leong ◽  
Michelle J. Leus ◽  
Graham T. Eyres ◽  
David J. Burritt ◽  
...  
Keyword(s):  
Electric Field ◽  
Allium Cepa ◽  
Structural Damage ◽  
Structural Changes ◽  
Cell Damage ◽  
Onion Bulb ◽  
Scanning Electron Micrographs ◽  
Onion Bulbs ◽  
Dipropyl Disulfide ◽  
Allium Cepa L

This study investigated whether pulsed electric field (PEF) treatment can induce structural changes of whole, intact red onion bulb (Allium cepa L. var. Red Pearl). Onion bulbs were treated at electric field strengths of 0.6 and 1.2 kV/cm combined with energy inputs of 6 and 60 kJ/kg at different onion orientations with respect to the high voltage electrode. Results showed that onion cells across all fleshy scales experienced uniform cell damage with a higher proportion (>80%) of non-metabolically viable cells after PEF treatment at 1.2 kV/cm when the root end was positioned facing toward the PEF electrode. The findings were supported by cryogenic-scanning electron micrographs (cryo-SEM), where the underlying storage circular cells were completely damaged owing to the PEF treatment. In this study, it was found that the treatment intensity of PEF to induce structural damage across all the scale layers of an onion bulb coincided with an increase in dipropyl disulfide (DPDS) released from the onion bulbs. Therefore, DPDS was used as a volatile marker indicating cellular disruption within whole, intact onion bulbs. A considerable increase of DPDS, up to 52-fold, was detected from PEF-treated onion bulbs compared to untreated bulbs.

scholarly journals Physicochemical Analysis and Antioxidant Activity of Onion Bulbs (Allium cepa L.)

2020 ◽  
Vol 5 (2) ◽  
pp. 56-67
Author(s):  
Vera Ladeska ◽  
Rindita ◽  
Nur Amyra ◽  
Tamara Dwi Veranthy
Keyword(s):  
Antioxidant Activity ◽  
Allium Cepa ◽  
Single Layer ◽  
Ethanol Extract ◽  
Physicochemical Characteristics ◽  
Water Soluble ◽  
Onion Bulb ◽  
Total Phenolic ◽  
Allium Cepa L ◽  
Dpph Method

Allium cepa L. (onion bulb) is a cultivated onion extensively and types of onions that are often used for various cuisines in Indonesia. The onion bulb was efficient in reducing blood fat levels and diuretics. This study aims to complete the onion monograph with determine the physicochemical characteristics and antioxidant activity. Microscopic results obtained include: has fibrous roots and it’s white, and about 9.5 cm long. The stem is pseudo, and the water is whitish-green, cylindrical leaves are dark green, elongated like a pipe and hollow with a length of ± 20 cm, and the tip is tapered. Onion tubers are single layer bulbs, having a diameter of 6 mm, which is higher than onions. Microscopic results contained identification fragments, including hair covering and transporting beams with thickening stairs and spirals. From the results of research on ethanol extract, 70% Allium cepa L. shows a drying shrinkage of 9.69%, 5.16% total ash content, 0.07 % acid insoluble acid dust, 14.36% water-soluble extract, and soluble ethanol extracts 23.04%. Phytochemical screening contains flavonoids, saponins, phenols, dan triterpenoids. Total flavonoid content contained in ethanol extract of onion tubers was 1.48 ± 0.12 mg QE/g. Total phenolic concentrations obtained in onion tuber ethanol extract were 103.47 ± 3.09 mg GAE/g. The antioxidant activity of ethanol extract of onion tubers by the DPPH method received IC50 is 65.31 ppm.

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