scholarly journals The impact of date palm fruits and their component polyphenols, on gut microbial ecology, bacterial metabolites and colon cancer cell proliferation

2014 ◽  
Vol 3 ◽  
Author(s):  
Noura Eid ◽  
Sumia Enani ◽  
Gemma Walton ◽  
Giulia Corona ◽  
Adele Costabile ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Date Palm ◽  
Phoenix Dactylifera ◽  
Fermentation Time ◽  
Flavonoid Aglycones ◽  
Early Suggestion ◽  
Date Fruit ◽  
Palm Fruits ◽  
The Impact

AbstractThe fruit of the date palm (Phoenix dactyliferaL.) is a rich source of dietary fibre and polyphenols. We have investigated gut bacterial changes induced by the whole date fruit extract (digested date extract; DDE) and its polyphenol-rich extract (date polyphenol extract; DPE) using faecal, pH-controlled, mixed batch cultures mimicking the distal part of the human large intestine, and utilising an array of microbial group-specific 16S rRNA oligonucleotide probes. Fluorescence microscopic enumeration indicated that there was a significant increase in the growth of bifidobacteria in response to both treatments, whilst whole dates also increased bacteroides at 24 h and the total bacterial counts at later fermentation time points when compared with DPE alone. Bacterial metabolism of whole date fruit led to the production of SCFA, with acetate significantly increasing following bacterial incubation with DDE. In addition, the production of flavonoid aglycones (myricetin, luteolin, quercetin and apigenin) and the anthocyanidin petunidin in less than 1 h was also observed. Lastly, the potential of DDE, DPE and metabolites to inhibit Caco-2 cell growth was investigated, indicating that both were capable of potentially acting as antiproliferative agentsin vitro, following a 48 h exposure. This potential to inhibit growth was reduced following fermentation. Together these data suggest that consumption of date fruits may enhance colon health by increasing beneficial bacterial growth and inhibiting the proliferation of colon cancer cells. This is an early suggestion that date intake by humans may aid in the maintenance of bowel health and even the reduction of colorectal cancer development.

Floral induction in date palm seedlings (Phoenix dactylifera var. Deglet Nour) cultured in vitro

1987 ◽  
Vol 65 (1) ◽  
pp. 137-142 ◽  
Author(s):  
Saïda Ammar ◽  
Abdellatif Benbadis ◽  
Bal Krishna Tripathi
Keyword(s):  
Date Palm ◽  
Root Formation ◽  
Early Stage ◽  
Floral Induction ◽  
Phoenix Dactylifera ◽  
Flower Bud ◽  
Precocious Flowering ◽  
Cultural Conditions ◽  
Bud Initiation

Flower bud initiation in 5-month-old seedlings of date palm (Phoenix dactylifera L. var. Deglet Nour) was studied under controlled conditions. Normally inflorescence formation in mature plants takes 8 to 10 years. In juvenile plants inflorescence formation was induced in a 16-h day at 28 °C, by a combination of 6-benzylaminopurine, indoleacetic acid, and glucose or sucrose. The present investigation has determined favourable cultural conditions for floral induction in date palm in vitro at a very early stage of ontogeny. Both male and female flowers were induced on young plants. Floral induction usually occurred only when root formation was completely inhibited. The apparent antagonism between root formation and floral development suggests a possible competition in the young plant for growth substances, although production of floral inhibitory substances from the root cannot be precluded. These observations on the induction of precocious flowering in date palm seedlings suggest a model of development, corresponding to neoteny, of this tree as an herb.

scholarly journals 2,4-D induction of somaclonal variations in in vitro grown date palm (Phoenix dactylifera L. cv Barhee)

2021 ◽  
Author(s):  
Emna Baklouti ◽  
Thierry Beulé ◽  
Amèni Nasri ◽  
Amal Ben Romdhane ◽  
Riadh Drira ◽  
...  
Keyword(s):  
Date Palm ◽  
Specific Activity ◽  
Phoenix Dactylifera ◽  
Proline Content ◽  
Epigenetic Changes ◽  
Negative Effects ◽  
Somaclonal Variations ◽  
Phoenix Dactylifera L ◽  
Free Media

Abstract The present study is a part of a program designed at improving the date palm, Phoenix dactylifera L. cv. Barhee, through induced somaclonal variation. In this work, caulogenic cultures were subcultured on MS media supplemented with 0, 1, 5, 10, 20 and 40 mg L− 1 2,4-D in order to induce genetic and epigenetic variations. The highest doses of 2,4-D were found to induce severe negative effects on in vitro cultures, although some tissues were able to survive and to produce calli with high morphogenetic capacities. Our analysis showed some significant effect of 2,4-D on several physiological parameters. Indeed, chlorophyll and growth rates were found to drastically decrease while proline content increased from 535 nmol g− 1 to 2973 nmol g− 1 FW when 40 mg L− 1 2,4-D were used. In vitro cultures showed several signs of oxidative stress, such as high levels of hydrogen peroxide (H2O2) and malondialdehyde (MDA); likewise, the specific activity of several antioxidant enzyme was found to increase. Plant regeneration from in vitro cultures treated with 2,4-D was obtained after subculturing explants onto PGR-free media. The ISSR analysis of 2,4-D-treated material showed that this plant growth regulator (PGR) induced measurable genetic variations. The global DNA methylation rates (GMR) as estimated through the HPLC analysis of nucleosides also confirmed the presence of epigenetic changes caused by 2,4-D as GMRs increased from 13.8–18.93%.

scholarly journals Potentials and Safety of Date Palm Fruit against Diabetes: A Critical Review

Foods ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1557
Author(s):  
Md Al-Tareq Mia ◽  
Md Golam Mosaib ◽  
Md Ibrahim Khalil ◽  
Md Asiful Islam ◽  
Siew Hua Gan
Keyword(s):  
Date Palm ◽  
Antioxidant Activities ◽  
Human Study ◽  
Insulin Receptors ◽  
Β Cells ◽  
Palm Fruit ◽  
Good Potential ◽  
Palm Fruits

Diabetes is a chronic metabolic disorder triggered by disturbances in carbohydrate, protein, and lipid metabolisms, where either reduced secretion or sensitivity of insulin is observed coupled with poor glucose control. Date palm fruits are one of the fruits reported to have good potential in diabetes treatment due to its presence of polyphenols exerting strong antioxidant activities. Other possible mechanisms of action include the polyphenolic compounds, which can inhibit enzymes like α-amylase and α-glucosidase. Flavonoids in dates can stimulate β-cells by increasing the number of islets and β-cells, recovering endocrine pancreatic tissues, reducing β-cell apoptosis, activating insulin receptors following the increase in insulin secretion, in addition to improving diabetes-induced complications. In this review, the in vitro, in vivo, and human study-based evidence of date palm as an anti-diabetic fruit is summarised.

scholarly journals Introduction Pages

2019 ◽  
Vol 11 (1) ◽  
pp. I-VI
Author(s):  
Radu E. SESTRAS
Keyword(s):  
Date Palm ◽  
Disease Status ◽  
Shoot Elongation ◽  
Phoenix Dactylifera ◽  
Effective Control ◽  
Albino Rats ◽  
Normal Male ◽  
Shoot Cultures ◽  
African Mahogany

Notulae Scientia Biologicae (http://www.notulaebiologicae.ro), Issue 1, Volume 11, 2019: The papers published in this issue (http://www.notulaebiologicae.ro/index.php/nsb/issue/current) represent interesting novelties in different topics of life science. Among the exciting researches, we invite readers to find news about: The role of DNA Methylation in perennial plants; Peste des petits ruminants: Aetiology, pathology, immunology, disease status in Africa, diagnosis, control, prevention and treatment; Phytotherapy and polycyclic logging: implication on genetic multiplicity and diversity of African mahogany in tropical rainforest; Insight into re-emergence of cassava brown streak disease: the need to explore diverse approaches for effective control; Microbiological characterization of grilled meat “Tchatchanga” in Cotonou (Southern Benin): Enumeration, isolation and resistance profile of Staphylococcus aureus and Escherichia coli; Development of shoot cultures from leaf explant of Portulaca quadrifida L.; Evaluation of in vitro shoot elongation and rooting of date palm, and determination of physiological characteristics of regenerated plantlets; Maturation and germination of date palm (Phoenix dactylifera L.) somatic embryos; Hypoglycaemic and hypolipidemic effects of black brand of lipton tea (Camellia sinensis) on normal male albino rats.

scholarly journals Modelling ancient areas for date palms (Phoenix species: Arecaceae): Bayesian analysis of biological and cultural evidence

2020 ◽  
Vol 193 (2) ◽  
pp. 228-262 ◽  
Author(s):  
Diego Rivera ◽  
Javier Abellán ◽  
José Antonio Palazón ◽  
Concepción Obón ◽  
Francisco Alcaraz ◽  
...  
Keyword(s):  
Date Palm ◽  
Phoenix Dactylifera ◽  
Nile Valley ◽  
Jordan Valley ◽  
Date Palms ◽  
Date Fruit ◽  
Plant Remains ◽  
Present Distribution ◽  
Valley Area ◽  
Independent Species

Abstract Our aim in this study is to build a model for the expansion of date palms (Phoenix spp., Arecaceae) that can be linked to domestication processes. Palaeontological and archaeobotanical evidence concerning date palm is extremely diversified around the Mediterranean Basin and in West Asia, mainly consisting of date fruit remains, but also including leaf fragments and other plant remains. This biological evidence is further compared with cultural evidence (coins, pottery, ancient texts) and the present distribution of Phoenix spp. in the area. Bayesian methods working with likelihood and conditional probabilities are successfully applied to generate a model for displaying in maps the ancient distribution of palm groves in terms of probabilities. The model suggests that the domestication of Phoenix dactylifera occurred mainly east of 30°E, probably in the Jordan Valley area, starting before 7 kya and, in a westward shift, that this was gradually superposed onto pre-existing local western populations of the same genus, especially in the Nile valley. It appears that this mainly affected the P. dactylifera western cluster (P. excelsior, P. atlantica, P. iberica). However, other taxa persisted as independent species (P. theophrasti, P. canariensis).

scholarly journals In vitro Morphogenesis of Arabian Date Palm (Phoenix dactylifera L.)

2014 ◽  
Vol 23 (2) ◽  
pp. 211-219
Author(s):  
Md. Abul Kalam Azad ◽  
Hasnatul Arefin ◽  
Md. Amzad Hossain
Keyword(s):  
Date Palm ◽  
Callus Formation ◽  
Shoot Proliferation ◽  
Phoenix Dactylifera ◽  
Shoot Induction ◽  
In Vitro Morphogenesis ◽  
Shoot Initiation ◽  
Phoenix Dactylifera L ◽  
Young Leaves

After inoculation of young leaves of date palm offshoot required about six months to complete the morphogenesis process. Fourteen weeks were required for embryogenic callus formation under continuous dark condition and nine weeks for shoot initiation (under 16/8 h light/dark). The highest number of explants (80%) produced callus in modified MS containing 5 mg/l 2,4-D + 2 mg/l 2ip. Sixty per cent of explants produced callus in the modified medium containing 5 mg/l 2,4-D + 5 mg/l NAA. while only 50 per cent of the explants formed callus in the same medium when supplemented with only 5 mg/l 2,4-D. The induced calli were transferred to modified MS for shoot proliferation. A combination of two cytokines showed better performance than single ones in shoot induction. The highest percentage (70) of shoot developed in modified MS containing 2 mg/l BAP + 1 mg/l Kn. Forty per cent shoot induction was found in the same medium supplemented with 2 mg/l of BAP. Thirty per cent shoot formed in MS containing 1 mg/l of Kn. The shoots were subcultured at three- four week intervals throughout culture duration. D. O. I. http://dx.doi.org/10.3329/ptcb.v23i2.17522 Plant Tissue Cult. & Biotech. 23(2): 211-219, 2013  (December)

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