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Article: Microscopic Image Segmentation and Morphological Characterization of Novel Chitosan/Silica Nanoparticle/Nisin Films Using Antimicrobial Technique for Blueberry Preservation.

Sami, Rokayya / Soltane, Schahrazad / Helal, Mahmoud

2021 Volume 11, Issue 5

Abstract: In the current work, the characterization of novel chitosan/silica nanoparticle/nisin films with the addition of nisin as an antimicrobial technique for blueberry preservation during storage is investigated. Chitosan/Silica Nanoparticle/N (CH-SN-N) films ...

Abstract	In the current work, the characterization of novel chitosan/silica nanoparticle/nisin films with the addition of nisin as an antimicrobial technique for blueberry preservation during storage is investigated. Chitosan/Silica Nanoparticle/N (CH-SN-N) films presented a stable suspension as the surface loads (45.9 mV) and the distribution was considered broad (0.62). The result shows that the pH value was increased gradually with the addition of nisin to 4.12, while the turbidity was the highest at 0.39. The content of the insoluble matter and contact angle were the highest for the Chitosan/Silica Nanoparticle (CH-SN) film at 5.68%. The use of nano-materials in chitosan films decreased the material ductility, reduced the tensile strength and elongation-at-break of the membrane. The coated blueberries with Chitosan/Silica Nanoparticle/N films reported the lowest microbial contamination counts at 2.82 log CFU/g followed by Chitosan/Silica Nanoparticle at 3.73 and 3.58 log CFU/g for the aerobic bacteria, molds, and yeasts population, respectively. It was observed that (CH) film extracted 94 regions with an average size of 449.10, at the same time (CH-SN) film extracted 169 regions with an average size of 130.53. The (CH-SN-N) film presented the best result at 5.19%. It could be observed that the size of the total region of the fruit for the (CH) case was the smallest (1663 pixels), which implied that the fruit lost moisture content. As a conclusion, (CH-SN-N) film is recommended for blueberry preservation to prolong the shelf-life during storage.
Language	English
Publishing date	2021-04-21
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2614641-1
ISSN	2077-0375
ISSN	2077-0375
DOI	10.3390/membranes11050303
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: The Response of Globe Artichoke Plants to Potassium Fertilization Combined with the Foliar Spraying of Seaweed Extract

Petropoulos, Spyridon A. / Sami, Rokayya / Benajiba, Nada / Zewail, Reda M. Y. / Mohamed, Mustafa H. M.

Agronomy. 2022 Feb. 16, v. 12, no. 2

2022

Abstract: This work investigated the effects of potassium mineral fertilizers, combined with biofertilizers (T1–T4 treatments) and the foliar spraying of seaweed extract (at 1 g/L, 2 g/L, and 3 g/L) on the vegetative growth characters, chemical constituents of ... ...

Abstract	This work investigated the effects of potassium mineral fertilizers, combined with biofertilizers (T1–T4 treatments) and the foliar spraying of seaweed extract (at 1 g/L, 2 g/L, and 3 g/L) on the vegetative growth characters, chemical constituents of foliage, and the yield and quality parameters of globe artichoke. The maximum height, and the fresh and dry weight of the leaves, was recorded in plants that received only soil with added potassium (T1 treatment) and sprayed with seaweed extract at 3 g/L. Furthermore, the highest number of offshoots per plant was registered in the T2 treatment combined with seaweed extract (3 g/L). T1 and T2 treatments resulted in the highest values of leaf N, P, K, and total carbohydrate content when combined with seaweed extract (3 g/L). The highest numbers of early, late, and total heads per plant were obtained for the T1 treatment and seaweed extract (3 g/L). Similarly, most of the head quality parameters were beneficially affected by the T2 treatment and seaweed extract (3 g/L). In conclusion, it is suggested that soil application of mineral potassium fertilizer (75% of RD) combined with biofertilizer (25% of RD) and the foliar spraying of seaweed extracts at 3 g/L, was most beneficial for the yield and quality parameters of globe artichoke plants.
Keywords	agronomy ; artichokes ; biofertilizers ; carbohydrate content ; head ; leaves ; macroalgae ; plant extracts ; potassium ; potassium fertilizers ; soil ; soil treatment ; vegetative growth
Language	English
Dates of publication	2022-0216
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2607043-1
ISSN	2073-4395
ISSN	2073-4395
DOI	10.3390/agronomy12020490
Database	NAL-Catalogue (AGRICOLA)

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Article: Verification of Lactobacillus brevis tolerance to simulated gastric juice and the potential effects of postbiotic gamma-aminobutyric acid in streptozotocin-induced diabetic mice

Abdelazez, Amro / Abdelmotaal, Heba / Evivie, Smith Etareri / Bikheet, Maha / Sami, Rokayya / Mohamed, Hassan / Meng, Xiangchen

Food science and human wellness. 2022 Jan., v. 11, no. 1

2022

Abstract: The therapeutic effect of gamma-aminobutyric acid (GABA) on diabetes was spread as one of the alarming epidemics worldwide. The study aims to investigate the function of Lactobacillus brevis KLDS₁.₀₇₂₇ and KLDS₁.₀₃₇₃ strains as glutamic acid ... ...

Abstract	The therapeutic effect of gamma-aminobutyric acid (GABA) on diabetes was spread as one of the alarming epidemics worldwide. The study aims to investigate the function of Lactobacillus brevis KLDS₁.₀₇₂₇ and KLDS₁.₀₃₇₃ strains as glutamic acid decarboxylase 65 (GAD₆₅) carriers capable of generating GABA by comparing in vitro free and freeze-dried models and GABA intervention in vivo. PCR amplification of gad and in vitro i.e., (growth rate, viability at different pH, bile tolerance, and survivability in simulated gastric juice) were performed. In vivo experiments were conducted in 7 groups of C57BL/6J mice. Each group was injected with streptozotocin (ContSTZ, INSSTZ, LAC₁STZ, LAC₁MFDSTZ, LAC₂STZ, LAC₂MFDSTZ) daily except for the control (Cont). One group was injected with insulin (INSSTZ). The body weight and hyperglycemia in the blood were assessed weekly, post-euthanasia blood plasma parameters, insulin, and histological examination were evaluated. Results indicated L. brevis strains demonstrated a great tolerance to bile and simulated gastric juice in vitro (P<0.05). ContSTZ had the highest average glucose level (6.84±6.46) mmol/L while INSSTZ expressed dramatically decreed in glucose level and displayed a significant decline in the average of weekly blood glucose (−5.74±3.08) mmol/L. The lowest body weight (ContSTZ) was (19.30±0.25) g. Based on the blood plasma analysis, L. brevis strains improved good cholesterol properties, liver and kidney functions, where most of these parameters fall within the average the reference range and prevent the development of symptoms of type 1 diabetes in vivo. As recommended, L. brevis should be commonly distributed as a postbiotic GABA in pharmaceutical and nutritional applications.
Keywords	Lactobacillus brevis ; bile ; bile resistance ; blood glucose ; blood plasma ; body weight ; cholesterol ; food science ; freeze drying ; gamma-aminobutyric acid ; gastric juice ; glucose ; glutamate decarboxylase ; histology ; humans ; hyperglycemia ; insulin ; insulin-dependent diabetes mellitus ; kidneys ; liver ; pH ; streptozotocin ; therapeutics ; viability
Language	English
Dates of publication	2022-01
Size	p. 165-176.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	2712869-6
ISSN	2213-4530
ISSN	2213-4530
DOI	10.1016/j.fshw.2021.07.017
Database	NAL-Catalogue (AGRICOLA)

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Article: Effect of Nano Silicon Dioxide Coating Films on the Quality Characteristics of Fresh-Cut Cantaloupe.

Sami, Rokayya / Almatrafi, Manal / Elhakem, Abeer / Alharbi, Mona / Benajiba, Nada / Helal, Mahmoud

Membranes

2021 Volume 11, Issue 2

Abstract: The prime objective of the research was to explore the coating effects of chitosan and nano-silicon dioxide with nisin as an antimicrobial agent on physicochemical properties, microbiological stability, and sensorial quality changes during the storage at ...

Abstract	The prime objective of the research was to explore the coating effects of chitosan and nano-silicon dioxide with nisin as an antimicrobial agent on physicochemical properties, microbiological stability, and sensorial quality changes during the storage at 4 °C. The combination of nano-material and chitosan in addition to nisin was effective for reducing the postharvest attributes of fresh-cut cantaloupes in addition to the highest score in sensory evaluation. Chitosan coating treatment enhanced the microbiological quality 2.50 log CFU/g and 1.87 log CFU/g for aerobic counts and mold/yeasts populations, respectively. In a word, the combination of chitosan/nano-silica/nisin treatment was the best condition for fresh-cut cantaloupe shelf life extension by maintaining color, vitamin C 22.29 mg/100g, peroxidase activity 8.06 U/min.g, and other microbiological tests up to storage time of 8 days.
Language	English
Publishing date	2021-02-17
Publishing country	Switzerland
Document type	Journal Article
ISSN	2077-0375
ISSN	2077-0375
DOI	10.3390/membranes11020140
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: The combined effect of coating treatments to nisin, nano-silica, and chitosan on oxidation processes of stored button mushrooms at 4 °C.

Sami, Rokayya / Elhakem, Abeer / Alharbi, Mona / Benajiba, Nada / Fikry, Mohammad / Helal, Mahmoud

Scientific reports

2021 Volume 11, Issue 1, Page(s) 6031

Abstract: Agaricus bisporus is an edible fungus with a limited shelf life due to high moisture loss, browning, respiration, self-dissolve, lack of physical protection, rotting, and microbial attack. Mushrooms have been coated with nisin, nano-silica, and chitosan ... ...

Abstract	Agaricus bisporus is an edible fungus with a limited shelf life due to high moisture loss, browning, respiration, self-dissolve, lack of physical protection, rotting, and microbial attack. Mushrooms have been coated with nisin, nano-silica, and chitosan films in order to extend the shelf life, preserve quality and oxidation activities. The results showed that treating the mushrooms with chitosan and nano-silica (CH-AN-SILICA) increased superoxide dismutase activity (SOD-6.53 U kg
Language	English
Publishing date	2021-03-16
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-021-85610-x
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Chitosan Edible Films Enhanced with Pomegranate Peel Extract: Study on Physical, Biological, Thermal, and Barrier Properties.

Kumar, Nishant / Pratibha / Trajkovska Petkoska, Anka / Khojah, Ebtihal / Sami, Rokayya / Al-Mushhin, Amina A M

Materials (Basel, Switzerland)

2021 Volume 14, Issue 12

Abstract: In the present study, pomegranate peel extract was used as a reinforcing agent in developing chitosan-based edible film. Different concentrations (0.2 g/mL, 0.4 g/mL, 0.6 g/mL, 0.8 g/mL, and 1.0 g/mL) of pomegranate peel extract were incorporated in ... ...

Abstract	In the present study, pomegranate peel extract was used as a reinforcing agent in developing chitosan-based edible film. Different concentrations (0.2 g/mL, 0.4 g/mL, 0.6 g/mL, 0.8 g/mL, and 1.0 g/mL) of pomegranate peel extract were incorporated in chitosan-based edible film. A neat chitosan film was used as a control. This work covers the effect of pomegranate peel extract on the physical, biological, mechanical, thermal, and barrier properties of enriched chitosan-based edible film. The results showed that the thickness (0.142-0.159 mm), tensile strength (32.45-35.23 MPa), moisture (11.23-15.28%), opacity (0.039-0.061%), water (1.32-1.60 g·mm/m
Language	English
Publishing date	2021-06-15
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma14123305
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Article ; Online: Effects of drying methods and solvent extraction on quantification of major bioactive compounds in pomegranate peel waste using HPLC.

Kumar, Nishant / Pratibha / Neeraj / Sami, Rokayya / Khojah, Ebtihal / Aljahani, Amani H / Al-Mushhin, Amina A M

Scientific reports

2022 Volume 12, Issue 1, Page(s) 8000

Abstract: Bioactive compound characterization is an essential step for utilizing pomegranate peel waste as food and nutraceuticals ingredients. In the present investigation, the effects of different drying methods (freeze, tray-oven, and sun) and extraction ... ...

Abstract	Bioactive compound characterization is an essential step for utilizing pomegranate peel waste as food and nutraceuticals ingredients. In the present investigation, the effects of different drying methods (freeze, tray-oven, and sun) and extraction solvents such as methanol, ethanol, water, acetone, and hexane were investigated on the extraction and recovery of major bioactive compounds (ellagic acid, gallic acid, quercetin, and punicalagin) of pomegranate peel for two pomegranate varieties (i.e., Bhagwa and Ganesh) using high-performance liquid chromatography (HPLC). The results indicated that the freeze dried pomegranate peel powder of both pomegranate varities potential to extraction higher amount of bioactive compounds with methanol as extraction solvent as compared to other drying methods and solvents. Freeze-dried peel powder of Bhagwa pomegranate showed a higher amount of gallic acid (32.2 mg/g), ellagic acid (13.6 mg/g), punicalagin (15.2 mg/g), and quercetin (2.5 mg/g) with methanol solvent as compared to the other extract of Bhagwa and Ganesh varieties. The basis on the results of the current study, it can be concluded that the freeze-drying method of drying pomegranate peel powder and methanol as an extraction solvent are effective to recover higher amounts of bioactive compounds that can be utilized in food and pharmaceutical sectors at commercial scale.
MeSH term(s)	Chromatography, High Pressure Liquid/methods ; Ellagic Acid/chemistry ; Gallic Acid/analysis ; Lythraceae/chemistry ; Methanol ; Plant Extracts/pharmacology ; Pomegranate ; Powders ; Quercetin/analysis ; Solvents
Chemical Substances	Plant Extracts ; Powders ; Solvents ; Ellagic Acid (19YRN3ZS9P) ; Gallic Acid (632XD903SP) ; Quercetin (9IKM0I5T1E) ; Methanol (Y4S76JWI15)
Language	English
Publishing date	2022-05-14
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-022-11881-7
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Transforming waste into value: pomelo-peel-based nitrogen-doped carbon dots for the highly selective detection of tetracycline.

Qi, Haiyan / Huang, Demin / Jing, Jing / Ran, Maoxia / Jing, Tao / Zhao, Ming / Zhang, Chenqi / Sun, Xiaona / Sami, Rokayya / Benajiba, Nada

RSC advances

2022 Volume 12, Issue 12, Page(s) 7574–7583

Abstract: Tetracycline (TC) is widely used as a veterinary drug, and its residue in livestock products could enter the human body and cause damage. In this study, we developed an eco-friendly approach that utilized pomelo peel as a carbon source to synthesize new ... ...

Abstract	Tetracycline (TC) is widely used as a veterinary drug, and its residue in livestock products could enter the human body and cause damage. In this study, we developed an eco-friendly approach that utilized pomelo peel as a carbon source to synthesize new water-soluble N-doped carbon dots (P-NCDs) with blue fluorescence, obtaining a high quantum yield of up to 76.47% and achieving the goal of turning waste into value. Our prepared P-NCDs can selectively recognized TC, and their fluorescence was quenched based on the IFE. P-NCDs could measure the TC concentration in the linear range of 0-100 μmol L
Language	English
Publishing date	2022-03-08
Publishing country	England
Document type	Journal Article
ISSN	2046-2069
ISSN (online)	2046-2069
DOI	10.1039/d2ra00134a
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: HPLC-DAD phenolic screening and

Dassamiour, Saliha / Meguellati, Selsabil / Lamraoui, Hdouda / Bensaad, Mohamed Sabri / Sami, Rokayya / Alshehry, Garsa / Althubaiti, Eman Hillal / Al-Meshal, Areej Suliman

RSC advances

2022 Volume 12, Issue 21, Page(s) 13330–13338

Abstract: The date palm ( ...

Abstract	The date palm (
Language	English
Publishing date	2022-05-04
Publishing country	England
Document type	Journal Article
ISSN	2046-2069
ISSN (online)	2046-2069
DOI	10.1039/d2ra01630c
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Phytochemical Profile and Antioxidant Activity of Sesame Seed (

Morsy, Mohamed K / Sami, Rokayya / Algarni, Eman / Al-Mushhin, Amina A M / Benajiba, Nada / A, Almasoudi / Almasoudi, Abeer G / Mekawi, Enas

Antioxidants (Basel, Switzerland)

2022 Volume 11, Issue 2

Abstract: The by-product of sesame seed coats from the tahini industry was used for the extraction of bioactive compounds as novel antioxidants. This study was designed to evaluate the effect of a natural antioxidant on the quality of refined olive oil (ROO) ... ...

Abstract	The by-product of sesame seed coats from the tahini industry was used for the extraction of bioactive compounds as novel antioxidants. This study was designed to evaluate the effect of a natural antioxidant on the quality of refined olive oil (ROO) stored at 60 ± 1 °C for up to 48 days. The lyophilized sesame seed coats extract (LSSCE) was placed into fresh ROO at three levels, i.e., 200, 400, and 600 mg kg
Language	English
Publishing date	2022-02-09
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2704216-9
ISSN	2076-3921
ISSN	2076-3921
DOI	10.3390/antiox11020338
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