scholarly journals Antioxidant Activity of Date Palm Fruit (Phoenix dactylifera L.) Extract for Oxidative Stabilisation of Butter Oil at Ambient Temperature

2015 ◽  
Vol 58 (2) ◽  
pp. 59-64
Author(s):  
Fazal Rahman ◽  
Muhammad Nadeem ◽  
Sabir Khan ◽  
Shakeel Ahmad ◽  
Yasir Zahoor
Keyword(s):  
Linoleic Acid ◽  
Ambient Temperature ◽  
Date Palm ◽  
Radical Scavenging ◽  
Phoenix Dactylifera ◽  
Oxidation Products ◽  
Total Phenolic ◽  
Palm Fruit ◽  
Butter Oil ◽  
Phoenix Dactylifera L

In this study, long term preservation of butter oil was achieved through ethanolic extract of date palm fruit (Phoenix dactylifera L.). Butter oil was supplemented with date palm fruit extract (DPFE) at three different concentrations i.e. 250, 500 and 750 ppm (T1, T2 and T3) and compared with a control. Total phenolic content, DPPH free radical scavenging activity and inhibition of linoleic acid peroxidation of the DPFE was 5.19 GAE, 74.2 and 81%, respectively. IC50 value of date extract for the inhibition of DPPH and linoleic acid peroxidation was 2.45 and 0.82 mg/mL, respectively. The loss of oleic acid and linoleic acid in control after six months of storage was 16 and 52% as compared to T3 which was 4% and 14%. T3 yielded the lowest concentration of primary and secondary oxidation products with no effect on sensory attributes. DPFE can be used to enhance the shelf life of  butter oil at ambient temperature. 

scholarly journals Phenolic content, antioxidant and anti-inflammatory activities of seeds and leaves of date palm (Phoenix dactylifera L.)

2019 ◽  
Vol 5 ◽  
Author(s):  
Jenny A. John ◽  
Fereidoon Shahidi
Keyword(s):  
Date Palm ◽  
Ldl Cholesterol ◽  
Phenolic Content ◽  
Radical Scavenging ◽  
Phoenix Dactylifera ◽  
Cholesterol Oxidation ◽  
Total Phenolic ◽  
In Vitro Tests ◽  
Phoenix Dactylifera L ◽  
Anti Inflammatory

The total phenolic content of date palm (Phoenix dactylifera L.) seeds (samples 1 and 2) and leaves were determined and for the first time their antioxidant activity in a food system investigated. The anti-inflammatory activity and potency of samples in the inhibition of radical-induced DNA scission and human low-density lipoprotein (LDL) cholesterol oxidation was also evaluated. The total soluble phenolic content of the date palm leaves was 106.96 mg gallic acid equivalents (GAE)/g sample and ranged from 68.73 to 82.62 mg GAE/g of date seeds. Extracts showed good radical scavenging activity in the different in vitro tests conducted in this work and were found to be effective in inhibiting the oxidation of cooked ground meat. Soluble phenolic extract from date seeds of sample 1 was most effective in inhibiting DNA strand scission by 74.15%, while soluble phenolics from palm leaves showed the highest inhibition of LDL cholesterol oxidation (87.82%). Both samples significantly inhibited mRNA level of COX-2 at concentrations as low as 5 μg/mL, with the most potent inhibitory effect being for date palm leaf extracts at 50 μg/mL. A number of phenolic compounds including proanthocyanidin dimers, catechin, epicatechin, 5-O-caffeoylshikimic acid isomers, ferulic acid, rutin and isorhamnetin hexoside, among others, were detected in date palm seeds and leaves.

scholarly journals Potency of Ethanol Extracts Palm Seeds (Phoenix dactylifera L.) as Antidiabetic with Inhibition Kinetics Parameter

2020 ◽  
Vol 6 (2) ◽  
pp. 1-10
Author(s):  
Lisa Giovanny ◽  
Faliha Arinda Lestari ◽  
Nurul Marfira ◽  
Laksmi Ambarsari ◽  
Siti Warnasih
Keyword(s):  
Inhibitory Activity ◽  
Date Palm ◽  
Ethanol Extract ◽  
Phoenix Dactylifera ◽  
Total Phenolic ◽  
Phoenix Dactylifera L ◽  
Palm Juice ◽  
Ethanol Extracts ◽  
Fraction Measurement ◽  
Phenolic And Flavonoid

Dates seeds are one of the byproducts of the date palm juice industry which has the potential for further processing. Dates seeds contain active compounds that are known to have ability to inhibit αglucosidase. This study aims to measure the activity of 70% ethanol extract and the fraction of date palm seeds with a mechanism in inhibiting αglucosidase. The measurement of inhibitory activity was carried out by extracting date palm seeds using 70% water and ethanol. The extraction product is then fractionated with n-hexane, ethyl acetate, n-butanol, and water. Then the total phenolic and flavonoid calculations were calculated for each extract and fraction. Measurement of α-glucosidase inhibition activity was measured based on reaction of substrate to enzyme by the addition of inhibitors. The results showed that the ethanolextract had the highest total phenolic and flavonoid, which were 76.86 mg GAE / g and 21.19 mg QE / g, respectively. n-hexane fraction have the best inhibitory activity seen from the IC50 value, which is 12.69 mg/L. The kinetics of inhibition of 70% ethanol extract of date palm seeds are mixed inhibition. Keywords: α-glucosidase, date seeds, flavonoids, kinetic inhibition, phenolics

Compositional, Physical, Antioxidant and Sensory Characteristics of Novel Syrup from Date Palm (Phoenix dactylifera L.)

2009 ◽  
Vol 15 (6) ◽  
pp. 583-590 ◽  
Author(s):  
I. Ben Thabet ◽  
S. Besbes ◽  
M. Masmoudi ◽  
H. Attia ◽  
C. Deroanne ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Nutritional Value ◽  
Date Palm ◽  
Phoenix Dactylifera ◽  
Total Phenolic ◽  
Fresh Matter ◽  
Maple Syrup ◽  
Phoenix Dactylifera L ◽  
Date Palm Sap ◽  
Matter Basis

This study is a contribution to valorise date palm sap (Phoenix dactylifera L.) by elaboration of high quality syrup. Sap was concentrated by evaporation and the obtained product was characterized by its physicochemical, rheological, thermal, sensory properties and by its antioxidant activity. Syrups from date palm sap have a good nutritional value marked by high amounts of sugars (58—75 g/100 g fresh matter basis), minerals (2.1—2.6 g/100 g fresh matter basis) and phenolics (147.61—224.55 mg of ferulic acid equivalents/kg fresh weight). Syrup also presents an antioxidant activity that appears related to total phenolic content. Rheological properties indicate that syrup preserves a Newtonian behavior from 10 °C to 55 °C well modeled by Arrhenius equation. Hedonic evaluation showed that consumers’ appreciation of date palm syrup was not significantly different to the most known sap syrup: maple syrup.

Protective effect of date palm fruit extract (Phoenix dactylifera L.) on dimethoate induced-oxidative stress in rat liver

2011 ◽  
Vol 63 (5) ◽  
pp. 433-441 ◽  
Author(s):  
Emna Behija Saafi ◽  
Mouna Louedi ◽  
Abdelfattah Elfeki ◽  
Abdelfattah Zakhama ◽  
Mohamed Fadhel Najjar ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Protective Effect ◽  
Rat Liver ◽  
Date Palm ◽  
Phoenix Dactylifera ◽  
Fruit Extract ◽  
Palm Fruit ◽  
Phoenix Dactylifera L

scholarly journals EFFECT OF TRYPTOPHAN AND SOME POST HARVEST TREATMENT ON SOME CHEMICAL AND PHYSICAL PROPERTIES OF DATE PALM FRUIT (Phoenix dactylifera L.) C.V ASHRASSI: تأثير التربتوفان وبعض معاملات مابعد الحصاد في بعض الصفات الفيزيائية والكيميائية لثمار التمر (.Phoenix dactylifera L) صنف أشرسي

2019 ◽  
Vol 3 (3) ◽  
Author(s):  
Eman Hekmet Hassan  , Ghalib Nassir Hussein  ,   Nabeel Ibra
Keyword(s):  
Heat Treatment ◽  
Date Palm ◽  
Growing Season ◽  
Phoenix Dactylifera ◽  
Fruit Weight ◽  
Reducing Sugar ◽  
Total Sugar ◽  
Palm Fruit ◽  
Post Harvest ◽  
Phoenix Dactylifera L

    The study was conducted on date palm fruit (Phoenix dactylifera L.) c.v. Ashrassi, wich included tow experiment: first one field study carried out during the growing season 2017 at Mandali date palm station/ Ministery of Agriculture, the second one was A laboratory experiment conducted at Post harvest physiology lab at the Department of Horticulture and Landscape Grading/ College Agriculture University of Diyala,9 trees were selected at 10 years old homogeneous in size and growth planted at 5x5 m, The experiment was designed as factorial experiment using Complete Block Designed (RCBD), with two factor: tryptophan spraying at 0, 100, 200 ml. L- 1 concentration five times one spray each month, at Hababok stage, the second factor: some artificial ripening method to promote fruit Ripening, included (heat treatment at 20ºC for 10 minutes, freezing the fruit at- 18 ºC for 42 hours, and soaking the fruit in ethephon solution at 1000, 1500 ml. L- 1. The results can summarized as follow, The interaction between tryptophan spray with 200 ml. L- 1 and freezing the fruit gave the highest values for fruit weight, length and total sugar percent, also the interaction between tryptophan spray with 200 ml. L- 1 and soaking the fruit in ethephon solution at 1500ml.L- 1 resulted significant increase in reducing sugar percent.    

scholarly journals La extracción de polen, aplicación y efecto en la calidad del fruto de la palma datilera / Pollen extraction, application and effect on the quality of the date palm fruit

2021 ◽  
Vol 4 (2) ◽  
pp. 2146-2155
Author(s):  
Ricardo Salomón-Torres ◽  
Noé Ortiz-Uribe ◽  
Jesús Arturo Sol-Uribe ◽  
Noé Salvador Ortiz-Ruiz ◽  
Laura Samaniego-Sandoval
Keyword(s):  
Date Palm ◽  
Phoenix Dactylifera ◽  
Palm Fruit ◽  
La Palma ◽  
Phoenix Dactylifera L

El manejo de la polinización en el cultivo de palma datilera, es un proceso clave en el éxito de la cosecha de dátiles. El presente trabajo es una revisión de las técnicas más comunes tanto de extracción de polen, como de polinización en la palma datilera (Phoenix dactylifera L.). Asimismo se hace un análisis de la influencia de las fuentes de polen de los cultivares Deglet Noor, Khadrawy, Medjool y Zahidi sobre la calidad física y nutricional del dátil cultivar Medjool en México, donde se muestra que el uso de polen de machos criollos derivados de la variedad Khadrawy inducen mayor peso de fruto y semilla, así como mayor contenido de azucares, minerales y fenoles. 

scholarly journals Antioxidant Activity And Total Phenolic Content Of Date Palms Syrup (Phoenix Dactylifera L)

2017 ◽  
Vol 8 (1) ◽  
pp. 63-71
Author(s):  
Yetri Elisya ◽  
Harpolia Cartika ◽  
Anindita Rizkiana
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Total Phenolic Content ◽  
Date Palm ◽  
Phenolic Content ◽  
Phoenix Dactylifera ◽  
Total Phenolic ◽  
Phoenix Dactylifera L ◽  
Palm Juice ◽  
Dpph Method

Palm date fruits (Phoenix dactylifera L) have been used for medical treatment, one of the medical purpose as antioxidant, which is the coumpound for free radical scavenging. In this study used palm juice makes with non sentrifuged method by grounds 200 grams of palm fruit with 20 ml of aquadest and store in room temperature. For date palm syrup used in this study were from certain brand distributed on the market. Antioxidant activity was testing by using DPPH method and determined by spectrophotometry Uv-Vis in wavelength 517nm, and Total Phenolic Content was testing by Folin Ciocalteu method and determined by spectrophotometry Uv-Vis in wavelength 774nm.11 sample of date palm syrup was sampling by purposive sampling methods and then got 2 sample to tested. Date Palm Juice were made by Non Cetrifuged methods. All sample were tested antioxidant activity using DPPH and Total Phenolic Content using Folin Ciocalteu. This study obtained that best operating time for all sample in antioxidant activity is 30 minutes with the highest point is Date Palm Juice 91,54%, Sample X for 86,93% and Sampel Y 89,92%. There was a linear correlation between with the result Total Phenolic Content for Date Palm Juice 9,25 mgGAE/g, Sample X 4,13 mgGAE/g and Sampel Y 4,28 mgGAE/g. Date Palm Juice and Date Palm Syrup could scavenge free radical DPPH in huge concentration and contain phenolic compound.

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