Male date palm flowers: Valuable nutritional food ingredients and alternative antioxidant source and antimicrobial agent

Karra, Sirine; Sebii, Haïfa; Jardak, Marwa; Bouaziz, Mohamed Ali; Attia, Hamadi; Blecker, Christophe; Besbes, Souhail

doi:10.1016/j.sajb.2020.02.010

Cited by 13 publications

(11 citation statements)

References 49 publications

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“…The protein content marked a significant increase at a 9% of substitution compared to the control (8.30 vs. 7.64%, respectively), whereas the total carbohydrate showed a reverse trend (77.21 for 9% MDPF biscuits vs. 76.35% for the control). In fact, the MDPF powder is originally rich in minerals (especially K, P, and Mg), protein, and dietary fibers (Karra et al., 2019, 2020). Indeed, compared with the control, the high ash values reflect that MDPF‐added biscuits contain desirable mineral content and the increase in the protein content indicated that such enriched foodstuffs are with great nutritional importance and could serve as a nutritive solution facing the increased demand for highly nutritional natural products.…”

Section: Resultsmentioning

confidence: 99%

“…However, from 6% MDPF substitution, the biscuits become harder and more difficult to cut, resulting in an increase in the hardness and cutting strength values up to 15.99 and 132.57 N, respectively. This could probably be related to the increase of water retention and the better development of gluten network due to the enrichment of blends with proteins, dietary fibers, and antioxidants present in MDPF (Ajila et al., 2008; Baumgartner et al, 2018; Karra et al., 2019, 2020). In fact, the addition of dietary fiber may limit the interactions between glutenins and gliadins during gluten development.…”

Section: Resultsmentioning

confidence: 99%

“…The 9% supplementation had the lowest score, and therefore, it is the farthest from other formulations in the score plot especially in terms of taste and color. The refusal of the product’s taste by the consumer might be explained by the fact that an increase in the supplementation level leads to an increase in the polyphenol content as MDPF was rich in polyphenols (Karra et al., 2020). In fact, the polyphenols could be responsible for the bitter taste as indicated by Soares et al.…”

Section: Resultsmentioning

confidence: 99%

“…These modifications could be due to the presence of dietary fibers, flavor enhancers, and volatile compounds in MDPF. A previous study has demonstrated that MDPF contains glutamate which is considered as a flavor enhancer (umami taste) (Karra et al., 2020). Nevertheless, these changes were not sufficiently perceived for 3%‐fortified biscuits, which places the 6%‐fortified biscuits in a close degree of acceptability with the original recipe of the traditional biscuits.…”

Section: Resultsmentioning

confidence: 99%

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Male date palm flower powder: Effect of incorporation on physico‐chemical, textural, and sensory quality of biscuits

Karra

Sebii

Bouaziz

et al. 2020

J Food Process Preserv

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This study aims to elucidate the effect of male date palm flower (MDPF) incorporation in the dough properties and biscuit characteristics. Farinograph analysis demonstrated a progressive increase in water absorption (56.85%–61%) and dough stability (1.88–20.25 min) with increasing MDPF quantity due to its wealth in dietary fiber. Biscuit formulations were prepared using 3, 6, and 9% MDPF powder and evaluated for their physico‐chemical, textural, and sensory properties. The results have shown a significant increase (p < .05) in dietary fiber (1.22%–84.81%), protein (7.64%–8.30%), and ash content (1.30%–1.68%) coupled with a darkness increase (77.30–58.52) compared to the control. The textural analysis of doughs and biscuits showed that hardness increased with the increase in MDPF incorporation levels (2.52–5.26 N and 11.32–15.64 N, respectively). The sensory evaluation showed that up to 9% MDPF incorporation, the different sensory attributes were positively correlated, with more appreciation for the 6% fortified‐biscuit. Owing to its nutritional value, the MDPF powder could be used as an ingredient for bakery food products in gastronomy. Practical applications The male date palm flowers (MDPF) are considered as an under‐exploited by‐product as they are discarded or sometimes used in animal feed. However, they present a rich matrix composed mainly of dietary fiber, protein, and minerals. Nowadays, consumers are searching for healthy and novel foods which push the industrials to invent new dietetic formulations using vegetable protein source and dietary fibers. The MDPF incorporation in biscuit formulation might contribute to reducing these vegetable wastes allowing their valorization as a nutritional and functional ingredient at the same time.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Male date palm flower powder: Effect of incorporation on physico‐chemical, textural, and sensory quality of biscuits

Karra

Sebii

Bouaziz

et al. 2020

J Food Process Preserv

Self Cite

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“…Diverse investigations have reported the antioxidant, antimicrobial, anticancer, and other biological properties of flowers and their extracts ( Voon et al., 2012 ; Li et al., 2014 ; Al-Shukaili and Hossain., 2019 ; Karra et al., 2020 ). Moreover, flowers are common components in traditional medicine ( Li et al., 2014 ) that can be gathered directly from the wild vegetation, allowing the population to take advantage of this resource ( Magaña et al., 2010 ).…”

Section: Introductionmentioning

confidence: 99%

Jacaranda flower (Jacaranda mimosifolia) as an alternative for antioxidant and antimicrobial use

Aguirre‐Becerra

Pineda-Nieto

García‐Trejo

et al. 2020

Heliyon

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Antimicrobial resistance to antibiotics is a serious health problem worldwide, for this reason, the search for natural agents with antimicrobial power against pathogenic microorganisms is of current importance. The objective of this work was to evaluate the antioxidant capacity (ABTS+ and DPPH), antimicrobial activity, and polyphenol compounds of methanolic and aqueous extracts of Jacaranda mimosifolia flowers. The antimicrobial activity against Bacillus cereus ATCC 10876 , Bacillus subtilis ATCC 6633 , Enterococcus faecalis ATCC 51299 , Escherichia coli ATCC 25922 , Listeria monocytogenes ATCC 19115 , Pseudomonas aeruginosa ATCC 27853 , Salmonella typhimurium ATCC 14028, Staphylococcus aureus ATCC 25923, and Streptococcus mutans ATCC 25175, was determined using the Kirby Bauer technique. The results of polyphenolic compounds showed a high amount of total flavonoids in the methanolic and aqueous extracts (503.3 ± 86.5 and 245. 7 ± 27.8 mg Rutin Equivalents/g DW, respectively). Quercetin, gallic acid, caffeic acid, and rutin were identified by the HPLC-DAD technique, while in the GC-MS analysis, esters, fatty acids, organic compounds, as well as monosaccharides were identified. Higher antioxidant capacity was detected by the ABTS technique (94.9% and 62.6%) compared to DPPH values (52.5% and 52.7 %) for methanolic and aqueous extracts, respectively. The methanolic extract showed a greater inhibitory effect on gram-positive bacteria, with a predominant higher inhibition percentage on Listeria monocytogenes and Streptococcus mutans (86% for both). In conclusion, Jacaranda flower extracts could be a natural antimicrobial and antioxidant alternative due to the considerable amount of polyphenolic compounds, and serve as a sustainable alternative for the isolation of active ingredients that could help in agriculture, aquaculture, livestock, pharmaceutics, and other industrial sectors, to remediate problems such as oxidative stress and antimicrobial abuse.

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Establishment of Male and Female Eucommia Fingerprints by UPLC Combined with OPLS‐DA Model and Its Application

You

Wang

et al. 2023

Chemistry & Biodiversity

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Eucommia ulmoides Oliver is a dioecious plant, which plays an important role in traditional Chinese medicine. However, there has not yet been any research on male and female E. ulmoides. The UPLC fingerprints and OPLS-DA approach were able to quickly and easily identify and quantify E. ulmoides and differentiate between the male and female fingerprints. In this study, we optimized the UPLC conditions and analyzed them to investigate fingerprints of twenty-four extracts of Eucommiae Cortex (EC) and twenty-four extracts of Eucommiae Folium (EF) under optimal conditions. It was demonstrated that thirteen and twelve substances were possible chemical markers for EC and EF male and female discrimination and that the level of these markers -chlorogenic acid and protocatechuic acid -was many times higher in male than in female. This approach offered a reference for quality control and precise treatment of male and female E. ulmoides in the clinic.

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Male date palm flowers: Valuable nutritional food ingredients and alternative antioxidant source and antimicrobial agent

Cited by 13 publications

References 49 publications

Male date palm flower powder: Effect of incorporation on physico‐chemical, textural, and sensory quality of biscuits

Male date palm flower powder: Effect of incorporation on physico‐chemical, textural, and sensory quality of biscuits

Jacaranda flower (Jacaranda mimosifolia) as an alternative for antioxidant and antimicrobial use

Establishment of Male and Female Eucommia Fingerprints by UPLC Combined with OPLS‐DA Model and Its Application

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