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.

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.

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

scholarly journals Chemical Characteristics, Antioxidant Activity, Total Phenol, and Caffeine Contents in Coffee of Date Seeds (Phoenix dactylifera L.) of Red Sayer Variety

2019 ◽  
Vol 8 (2) ◽  
pp. 179-184
Author(s):  
Siti Warnasih ◽  
◽  
Ade Heri Mulyati ◽  
Diana Widiastuti ◽  
Zuniar Subastian ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
United Arab Emirates ◽  
Date Palm ◽  
Natural Antioxidants ◽  
Phoenix Dactylifera ◽  
Total Sugar ◽  
Total Phenol ◽  
Chemical Characteristics ◽  
Phoenix Dactylifera L ◽  
Palm Juice

Red Sayer is one of the date varieties from the United Arab Emirates. This variety is one type of dates that is imported into Indonesia and used as processed date palm juice producing waste, namely date seeds. Date seeds can be made into some coffee that is rich in antioxidants and does not contain caffeine. The purpose of this study is to determine the chemical characteristics, antioxidant activity, total phenol, and caffeine contents in coffee of the Red Sayer variety date seeds. Coffee of date seeds is made into powder and then analyzed for its contents of water, ash, protein, fat, carbohydrates and total sugar, besides its antioxidant activity, total phenol, and caffeine levels. The results of the analysis obtained are, as follows: 4.42±0.01% water, 1.17±0.04% ash, 8.55±0.64% protein, 7.34±0.07% fat, 78.52±0.76% carbohydrate, 16.39±0.01% total sugar, 23.81±0.22 µg/mL antioxidant activity (IC50) and 340.65±1.53 mg GAE / 100g total phenol, while caffeine is not detected. Red Sayer date seed coffee, therefore, can be a source of carbohydrates and natural antioxidants that does not contain caffeine.

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 Chemical Composition and Antioxidant Activity of Seed oil of Two Algerian Date Palm Cultivars (Phoenix dactylifera)

2014 ◽  
Vol 9 (12) ◽  
pp. 1934578X1400901 ◽  
Author(s):  
Mustapha Boukouada ◽  
Zineb Ghiaba ◽  
Nadhir Gourine ◽  
Isabelle Bombarda ◽  
Mokhtar Saidi ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Date Palm ◽  
Seed Oil ◽  
Phoenix Dactylifera ◽  
Seed Oils ◽  
Bleaching Effect ◽  
Date Seed ◽  
Phoenix Dactylifera L ◽  
Eastern Algeria

The fatty acid composition of date seed oil from two different date palm ( Phoenix dactylifera L.) cultivars, locally known as Degla-Baïdha and Tafezouine, were investigated. GC analysis revealed the presence of five dominant fatty acids: oleic C18:1 (46.51; 39.15%), lauric C12:0 (22.1; 28.5%), myristic C14:0 (10.7; 11.4%), palmitic C16:0 (9.6; 8.7%) and linoleic C18:2 (6.9; 6.1%). The oils was characterised by a low content of tocopherols (0.53; 1.41 μg/g). The antioxidant activity of the oils was investigated using the DPPH•(1,1-di-phenyl-2-picryl-hydrazyl) scavenging assay. The oils had a weak bleaching effect on DPPH• free radicals. This study showed that the qualities of the tested oils are highly comparable with those of some commercial seed oils of other plants. Furthermore, a statistical analysis using the hierarchy ascendant classification method was conducted in order to highlight the similarities and/or the differences regarding the contents of the main fatty acids found in some common plants and in the five most famous cultivars of Phoenix dactylifera of south eastern Algeria (Tafezouine, Degla-Baïdha, Deglet-Nour, Ghars, Tamdjouhert).

Extraction of Phenolic Compounds of six Algerian date (Phoenix dactylifera L.) cultivars from Ain-Saleh region, using Reflux method and Screening of Antioxidant Activity in vitro

2021 ◽  
pp. 161-167
Author(s):  
Habchi A. ◽  
Dekmouche M. ◽  
Hamia C. ◽  
Saidi M. ◽  
Yousfi M. ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Phenolic Compounds ◽  
Methanol Extract ◽  
Phoenix Dactylifera ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Phoenix Dactylifera L ◽  
Phenolic And Flavonoid

This study was designed to evaluate the antioxidant activity of phenolic compounds for six cultivars of date from In Saleh region (Phoenix dactylifera L.), which were extracted by reflux with solvents, 80% methanol and 70% aceton after the phenolic and flavonoid content were estimated. The total phenolic content (TPC) and total flavonoid content (TFC) of the extracts were measured using Folin–Ciocalteau and aluminum chloride colorimetric methods, respectively. Antioxidant activity acetone/H2O and methanol/H2O extracts using ABTS, DPPH, FRAP, TAC and CUPRAC assays. The results showed that methanolic solvent reflux gives better yields. The highest level of phenolic compounds for all dates varieties was found in the 80% methanol extract. This level ranged from 8.04 ± 0.14 to 46.81 ± 1.22 mg GAE/100 g fresh weight and flavonoid content was observed relatively low for both two solvents. However, extraction into 70% acetone gave the highest antioxidant activity with all assay. These results showed that dates had strongly scavenging activity on DPPH reaching 3.12 µg/mL in methanol/H2O from Cul1 (6.9 µg/mL with ascorbic acid), also on ABTS reaching 6.51 µg/mL in acetone/H2O from Cul2 (104.98 µg/mL with ascorbic acid).

Physicochemical and Functional Properties of Typical Tunisian Drink: Date Palm Sap (Phoenix dactylifera L.)

2007 ◽  
Vol 2 (2-3) ◽  
pp. 76-82 ◽  
Author(s):  
Imène Ben Thabet ◽  
Hamadi Attia ◽  
Souhail Besbes ◽  
Claude Deroanne ◽  
Frédéric Francis ◽  
...  
Keyword(s):  
Functional Properties ◽  
Date Palm ◽  
Phoenix Dactylifera ◽  
Phoenix Dactylifera L ◽  
Date Palm Sap ◽  
Physicochemical And Functional Properties
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