scholarly journals Effect of Four Pollinating Sources on Nutritional Properties of Medjool Date (Phoenix dactylifera L.) Seeds

Agriculture ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 45
Author(s):  
Ricardo Salomón-Torres ◽  
Jesús Arturo Sol-Uribe ◽  
Benjamín Valdez-Salas ◽  
Conrado García-González ◽  
Robert Krueger ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Dry Weight ◽  
Phoenix Dactylifera ◽  
Nutritional Composition ◽  
Nutritional Properties ◽  
Total Sugars ◽  
Northwest Mexico ◽  
Phoenix Dactylifera L ◽  
Low Concentrations ◽  
Pollen Sources

The objective of this study was to evaluate the effect of pollen source on the nutritional composition of seeds of the ‘Medjool’ date (Phoenix dactylifera L.) under conditions of northwest Mexico. The content of nutrients (protein, lipids, fiber, and ash), sugars (total, reducing, and non-reducing), and most abundant minerals, were evaluated, as well as antioxidant activities. The pollen of four cultivars (‘Deglet Noor’, ‘Khadrawy’, ‘Medjool’, and ‘Zahidi’) was selected. Four groups of three bunches were pollinated in each of the female palms. For the four treatments, the following ranges were obtained: Seeds had a weight of 1.32–1.41 g and low concentrations of protein (4.44–5.49 g/100 g) and lipids (9.62–10.19 g/100 g). The content of dietary fiber and ash was 59.65–72.59 g/100 g and 1.09–1.42 g/100 g, respectively. Total sugars content was 4.50–6.96 g/100 g, while the insoluble solids were 92.21–96.03 g/100 g. The predominant mineral was potassium with 399.97–459.79 mg/100 g dry weight, followed by sulfur with 135.51–162.67 mg/100 g dry weight. Finally, for antioxidant activities, DPPH (2,2′-diphenyl-1-picrylhydrazyl) and ABTS (2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)) assay results were 0.0014–0.0094 IC50 g/L and 0.176–0.299 IC50 g/L, respectively. The pollen sources had an effect on the physicochemical properties of the seeds of the ‘Medjool’ cultivar date. However, some of the parameters (diameter, total acidity, pH) did not show statistically significant differences. The pollen sources from the ‘Khadrawy’ and ‘Medjool’ cultivars were the ones that induced differences in physical, proximate, and nutritional parameters, while pollen from the ‘Zahidi’ source induced the largest differences for minerals. The results suggest that selection of the source of pollen has a significant effect on the nutritional properties of the date seed from the cultivar ‘Medjool’, and that its use could be feasible as a functional food or by-product of the date production.

scholarly journals Nutritional composition, microbial load and consumer acceptability of tiger nut (Cyperus esculentus), date (Phoenix dactylifera l.) and ginger (Zingiber officinale Roscoe) blended beverage

Agro-Science ◽  
2021 ◽  
Vol 20 (1) ◽  
pp. 72-79
Author(s):  
O. Ariyo ◽  
O. Adetutu ◽  
O. Keshinro
Keyword(s):  
Zingiber Officinale ◽  
Phoenix Dactylifera ◽  
Nutritional Composition ◽  
Sensory Properties ◽  
Metabolizable Energy ◽  
Microbial Load ◽  
Consumer Acceptability ◽  
Phoenix Dactylifera L ◽  
Hedonic Scale ◽  
Tiger Nuts

Beverage consumption is increasing but rarely used to promote micronutrient intakes in Nigeria. Diversifying the crops in local beverage production could improve dietary diversification and increase nutrients intake. This study determined the nutritional composition, microbial load and consumer acceptability of tiger nut, date and ginger blended beverage. Fresh tiger nuts, date and ginger were processed to formulate four beverage blends in these ratios 100:0:0; 85:10:5; 70:20:10; and 55:30:15. Samples were analysed for proximate, vitamins, minerals, anti-nutrients content and microbiological attributes using standard procedures. Consumer acceptability was determined using a 9-point hedonic scale by 30 untrained panelists. Data were analysed using descriptive statistics, independent t-test and ANOVA at p ≤ 0.05. Moisture, protein, fat, fibre, ash, carbohydrate (mg 100 g–1) and metabolizable energy composition (kCal 100 ml–1) ranged from 80.33-84.78, 0.71-0.8, 2.96-4.94, 0.20-1.63, 0.34-0.44, 9.10-13.63 and 78.2-101.5, respectively. Thiamin, niacin, ascorbic acid and tocopherol composition (mg 100 g–1) ranged from 0.30-0.68, 0.08-0.17, 4.73-8.40, and 7.20-15.31, respectively. Calcium, potassium, phosphorus, and iron contents (mg 100 g–1) ranged from 1.07-6.79, 164.8-259.3, 43.86-47.1, and 6.88-9.26, respectively. Saponin ranged from 0.01-0.05 mg 100 g–1. Number of colonies were negligible after refrigeration for 10 days. Sensory properties ranged from 6.40-6.63, 4.93-6.40, 4.70-7.20, 5.93-6.90, and 5.27-7.17 for appearance, aroma, taste, consistency and general acceptability, respectively. Date and ginger substitution enhance fibre, ash, carbohydrate, and calcium composition, the shelf life and sensory properties of tiger nut beverage, the blends are generally acceptable to consumers and considered safe up to day 10 when refrigerated.

EFFECTS OF SOIL CHARACTERISTICS AND DATE PALM MORPHOLOGICAL DIVERSITY ON NUTRITIONAL COMPOSITION OF PAKISTANI DATES

2016 ◽  
Vol 53 (3) ◽  
pp. 321-338
Author(s):  
GHAYOOR FATIMA ◽  
MARTIN WIEHLE ◽  
IQRAR AHMAD KHAN ◽  
ASIF ALI KHAN ◽  
ANDREAS BUERKERT
Keyword(s):  
Date Palm ◽  
Organic Matter Content ◽  
Morphological Diversity ◽  
Phoenix Dactylifera ◽  
Nutritional Composition ◽  
Matter Content ◽  
Soluble Solids ◽  
Snowball Sampling ◽  
High Concentration ◽  
Nutritional Properties

SUMMARYThe use of date palm (Phoenix dactylifera L.) has been closely connected with the survival of people in arid areas given their fruits´ high concentration of energy, fibre, minerals, vitamins and 16 amino acids. The arid climate and sandy or clayey loam soils in many parts of Pakistan are ideal for the cultivation of date palm, which contributes to feeding the country's rapidly growing population. To fill knowledge gaps on the effects of cultivar diversity and cultivation sites on the nutritional properties of dates, the present project studied dates and related physical and chemical soil properties across six districts in four provinces of Pakistan: Jhang, Muzaffargarh and Bahawalpur in Punjab; Dera Ismail Khan (D. I. Khan) in Khyber Pakhtunkhwa (KPK); Khairpur in Sindh and Panjgur in Baluchistan. To this end, during 2012–2013, a total of 170 households (HHs) were selected using a snowball sampling approach. Thirty-nine different date palm cultivars with diverse nutritional properties are grown in the study area. In these total soluble solids (TSS) were highest in Muzawati and Koharba cultivars, while cultivars and site conditions significantly affected TSS, minerals (calcium and magnesium), acidity, and firmness of dates. Concentration of CaCO3 and bulk density (BD) of soils varied widely, while hydraulic conductivity (HC) was similar across sites (p = 0.128). Mean soil pH was highest in Panjgur (8.3) and lowest in Muzaffargarh (7.6), soil organic matter content was highest in Jhang (0.8%) and lowest in D. I. Khan (0.6%) and plant available phosphorous (P) was highest in Muzaffargarh (7.8 mg kg−1) and lowest in Panjgur (6.0 mg kg−1). As indicated by correlation analysis BD and cation exchange capacity of soils seemed to affect TSS, whereas concentration of CaCO3 and available P were correlated with calcium concentration of dates. HC and electrical conductivity, however, seemed to have little effect on dates´ nutritional properties.

scholarly journals Nutritional Composition and in vitro Evaluation of the Antioxidant Properties of Various Dates Extracts (Phoenix dactylifera L.) from Libya

2010 ◽  
Vol 2 (4) ◽  
pp. 208-214 ◽  
Author(s):  
Nawal S. Hasan ◽  
Zulkhairi H. Amom ◽  
A.I. Nor ◽  
Norhafizah Mokhtarrud ◽  
Norhaizan Mohd Esa ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
Phoenix Dactylifera ◽  
Nutritional Composition ◽  
In Vitro Evaluation ◽  
Phoenix Dactylifera L

Microbiological and Physicochemical attributes of two date Cultivars Hmira and Feggous’ in Abadela, Bechar Oasis , South-West of Algeria

2020 ◽  
Vol 9 (5) ◽  
pp. 207-213
Author(s):  
Laouar Asma ◽  
Makhloufi Ahmed ◽  
Makhloufi Khadidja
Keyword(s):  
Dry Weight ◽  
Phoenix Dactylifera ◽  
High Energy ◽  
Sweet Taste ◽  
Mean Value ◽  
South West ◽  
Phoenix Dactylifera L ◽  
International Regulations ◽  
Aerobic Flora ◽  
High Level

Phoenix dactylifera L. Date, a high energy fruit with a sweet taste, is one of the most important staple foods consumed in southern region of Algeria. The aim of this study was to determine the physico-chemical and microbial attributes of two common date varieties (Feggous and Hmira) in Abadla Oasis–Bechar (South-west of Algeria) for their valorization. The analysis showed that dates fruits contained a high level of total sugar which exceeded 80%, but a low content of fat (0.72%) and protein (0.91%). The mean value of humidity, pH and ash of the samples were obtained as 22.13%, 6.17, and 1.72% respectively all dates contained high amounts of K, Na, Fe, Cu, Zn, Mn, Ca, Mg and P. The maximum levels of the majority of minerals were found in Feggous variety. Moreover, Vitamin E and Vitamin C of under-valued dates ranged between 0.37 and 2.74 mg/100g on dry weight basis. The microbiological analyses of dates showed the existence of total aerobic flora, a fungal flora dominated by Penicillium and Aspergillus, yeasts as well as the absence of pathogen strains. The morphological, biochemical and microbial properties of studied date fruits were in accordance with national and international regulations. These results may be useful for valorization of local date varieties, and for evaluation of dietary information and concludes that dates are the good sources of minerals and vitamins in Saharan regions.

Incidence de l'aération sur le traitement par compostage des sous-produits du palmier dattier contaminés parFusarium oxysporumf.sp.albedinis

2005 ◽  
Vol 51 (1) ◽  
pp. 69-77 ◽  
Author(s):  
K Chakroune ◽  
M Bouakka ◽  
A Hakkou
Keyword(s):  
Total Nitrogen ◽  
Date Palm ◽  
Dry Weight ◽  
Initial Mixture ◽  
Phoenix Dactylifera ◽  
The Other ◽  
Mineral Matter ◽  
Other Hand ◽  
Phoenix Dactylifera L ◽  
Cooling Phase

Composting of date palm (Phoenix dactylifera L.) residues contaminated with Fusarium f.sp oxysporum albedinis, causal agent of the vascular wilt (Bayoud) of the date palm, has been achieved. The effect of the aeration of the piles by manual turning has been studied. The maintenance of an adequate humidity of 60%–70%, necessary to the good progress of the composting process, required the contribution of 11.4 L of water/kg of the dried residues. The evolution of the temperatures in the three piles presents the same phases. A latency phase, followed after 2–3 d of composting by a thermophilic phase, which lasts about 24 d, where the temperature remains elevated between 50 and 70 °C. Then a cooling phase that takes about 15 d, during which the temperatures fall to values between 25 and 35 °C, near room temperature. Fusarium f.sp oxysporum albedinis is eliminated completely during the thermophilic phase of composting, and increasing frequencies of turning accelerate its disappearance to a certain extent. On the other hand, pH remained steady and relatively basic oscillating between 8.2 and 8.7. Ninety percent (90%) of the the date palm residues are composed exclusively of organic matters. The total nitrogen represents only 0.4%. The contribution of manure decreases the ratio of carbon to nitrogen (C/N) from 115 to 48 in the initial mixture. After 80 d of composting and according to the frequency of return up, there is a reduction of the granulometry of the substratum, the C/N ratio (from 29% to 44%), the organic matter (from 15% to 23%), the total volume (from 25% to 35%), and of the dry weight of the swaths (from 16% to 24%). On the other hand there is an increase in total nitrogen rate (from 20% to 40%) and in the mineral matter (from 23% to 35%).Key words: composting, palm date, Fusarium oxysporum f.sp. albedinis.

scholarly journals Cell suspension culture as a means to produce polyphenols from date palm (Phoenix dactylifera L.)

2018 ◽  
Vol 42 (5) ◽  
pp. 464-473 ◽  
Author(s):  
Poornananda Madhava Naik ◽  
Jameel Mohammed Al-Khayri
Keyword(s):  
Suspension Culture ◽  
Cell Suspension ◽  
Caffeic Acid ◽  
Cell Suspension Culture ◽  
Date Palm ◽  
Cell Suspension Cultures ◽  
Dry Weight ◽  
Phoenix Dactylifera ◽  
Fresh Weight ◽  
Phoenix Dactylifera L

ABSTRACT Date palm accumulates a wide range of secondary metabolites high in nutritional and therapeutic value. In the present study, date palm (Phoenix dactylifera L., cv. Shaishi) shoot-tip-induced callus was used to establish cell suspension cultures in Murashige and Skoog (MS) liquid medium containing 1.5 mg L-1 2-isopentenyladenine (2iP) and 10 mg L-1 naphthaleneacetic acid (NAA). To study the growth kinetics, cultures were maintained for 12 weeks during which weekly measurements were carried out to determine the biomass accumulation based on packed cell volume (%), fresh weight and dry weight (g). In addition, weekly determination of polyphenols (catechin, caffeic acid, kaempferol, and apigenin) was carried out using high performance liquid chromatography (HPLC). The 11-week-old culture was found highest in the production of biomass (62.9 g L-1 fresh weight and 7.6 g L-1 dry weight) and polyphenols (catechin-155.9 µg L-1, caffeic acid-162.7 µg L-1, kaempferol-89.7 µg L-1, and apigenin-242.7 µg L-1) from the cell suspension cultures. This is the first report on the production of polyphenols from the cell suspension culture of date palm. This study facilitates further development of large-scale production of polyphenols and the utilization of bioreactors.

scholarly journals Phenolic Composition and Antimicrobial Activity of Different Emirati Date (Phoenix dactylifera L.) Pits: A Comparative Study

Plants ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 497 ◽  
Author(s):  
M. Iftikhar Hussain ◽  
Mohammad H. Semreen ◽  
Abdallah Shanableh ◽  
Muhammad Nasir Khan Khattak ◽  
Ismail Saadoun ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Ethyl Acetate ◽  
Clinical Laboratory ◽  
Dry Weight ◽  
Inhibition Zone ◽  
Phoenix Dactylifera ◽  
Total Phenolic ◽  
E Coli ◽  
Phoenix Dactylifera L ◽  
Date Pits

The biochemical composition, secondary metabolites (phenolic compounds, flavonoids) and antimicrobial potential of different varieties of Emirati date (Phoenix dactylifera L.) pits were investigated. Total phenolic acids (TPC) and total flavonoid contents (TFC) of the different date pits were measured using a Folin–Ciocalteau reagent. Different organic solvents [(n-hexane; H2O: EtOH (1:1); ethyl acetate; acetone: Water (1:1); and methanol: Chloroform (1:1)] were compared to evaluate the phytotoxicity of Ajwa, Fard, Khalas, Khodari, Abu Maan, Lulu, and Mabroom date pits. The antimicrobial activity of the date pit extracts were evaluated by means of agar-well diffusion assay on Staphylococcus aureus (ATCC 29123), Escherichia coli (ATCC 25922) and Candida albicans (ATCC 66027). Minimum inhibitory concentrations (MICs) were measured following clinical laboratory standardization institute (CLSI) protocol. The biochemical analyses of date pits indicate that TPC were ranged from 7.80 mg of equivalent gallic acid⁄100 g dry weight in Ajwa to 4.65 mg in Mabroom. The TFC were ranged between 1.6–4.54 mg of equivalent catechin⁄100 g dry weight. Ajwa pit extract showed good quality traits (higher protein, lower ash content, and intermediate dietary fiber). The results indicate that the ethyl acetate extract of Khalas and Khodari inhibited S. aureus with an inhibition zone diameter of 20 mm and MIC of 10 mg/mL. Abu Mann pit extract inhibited the S. aureus and also decreased the population of E. coli. The diameter of inhibition zone was 15, 16, and 18 mm after treatment with Ajwa extracts, while the MICs were 7.5 and 5 mg/mL. The MeOH: CFM extract of Abu Mann and Ajwa was more potent against E. coli bacteria than any other extract. This work demonstrates that the Emirati date pits extract has antimicrobial (antibacterial, antifungal) potential and can be used as phytotoxic natural compounds.

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