Almond oil: A comprehensive review of chemical composition, extraction methods, preservation conditions, potential health benefits, and safety

Ouzir, Mounir; Bernoussi, Sara El; Tabyaoui, Mohamed; Taghzouti, Khalid

doi:10.1111/1541-4337.12752

Cited by 47 publications

(36 citation statements)

References 270 publications

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“…Table 1 depicts the percent saturation and approximate concentration of tocols in various cooking oils used in the study. [44][45][46] Although exact figures may differ by brand and oil extraction method, Almond oil has the greatest concentrations of unsaturated fatty acids overall. Furthermore, Grapeseed oil has the highest concentration of polyunsaturated fats, particularly linoleic acid.…”

Section: Oils As Alternativesmentioning

confidence: 99%

Exploring Plant-Based Cooking Oils as a Promising Topical Alternative to Sunscreen

Babel

2022

J Stud Res

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Sunscreens protect the skin from the harmful effects of Ultraviolet radiation in the sunlight. However, most commercial sunscreens pose health and environmental hazards, lose effectivity over time, or are simply unpleasant to use, making it imperative to search for greener, safer, and efficacious alternatives. Plant-based oil extractions are promising given their hydrophobicity, nontoxicity, and availability. This paper aims to determine the absorptive capabilities of five common cooking (vegetable) oils using UVA spectrophotometry and analyze the properties of the oils that relate to their efficacy. Oils high in tocols, such as Rice Bran Oil, had the highest extinction coefficient. The analysis suggests that plant-based oil extractions high in phytonutrients with aromatic rings and pi-systems, such as tocols and carotenoids, present the greatest potential to serve as UV chemical filters.

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Section: Oils As Alternativesmentioning

confidence: 99%

Exploring Plant-Based Cooking Oils as a Promising Topical Alternative to Sunscreen

Babel

2022

J Stud Res

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“…Spain is the second largest producer with 10.3389/fnut.2022.1071754 approximately 0.42 million tons, followed by Iran, Turkey, Australia, and Morocco. Almonds are highly regarded in the gastronomy and food industry due to their organoleptic properties (2)(3)(4). They can be also used as an ingredient in processed foods added to confectionary and bakery products (5,6).…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted extraction of cellulose nanocrystals from almond (Prunus amygdalus) shell waste

et al. 2023

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Almond (Prunus amygdalus) is one of the most common tree nuts on a worldwide basis. This nut is highly regarded in the food and cosmetic industries. However, for all these applications, almonds are used without their shell protection, which is industrially removed contributing approximately 35-75% of the total fruit weight. This residue is normally incinerated or dumped, causing several environmental problems. In this study, a novel cellulose nanocrystal (CNCs) extraction procedure from almond shell (AS) waste by using microwave-assisted extraction was developed and compared with the conventional approach. A three-factor, three-level Box–Behnken design with five central points was used to evaluate the influence of extraction temperature, irradiation time, and NaOH concentration during the alkalization stage in crystallinity index (CI) values. A similar CI value (55.9 ± 0.7%) was obtained for the MAE process, comprising only three stages, compared with the conventional optimized procedure (55.5 ± 1.0%) with five stages. As a result, a greener and more environmentally friendly CNC extraction protocol was developed with a reduction in time, solvent, and energy consumption. Fourier transform infrared (FTIR) spectra, X-ray diffractogram (XRD), atomic force microscopy (AFM), and scanning electron microscopy (SEM) images, and thermal stability studies of samples confirmed the removal of non-cellulosic components after the chemical treatments. TEM images revealed a spherical shape of CNCs with an average size of 21 ± 6 nm, showing great potential to be used in food packaging, biological, medical, and photoelectric materials. This study successfully applied MAE for the extraction of spherical-shaped CNCs from AS with several advantages compared with the conventional procedure, reducing costs for industry.

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“…The almond ( P. dulcis ) is one of the most important dried fruits in the world and one of the most important economic fruit trees in Xinjiang, China [ 16 ]. Almonds are native to the mountainous areas of West and Central Asia, and planting areas are widely distributed [ 17 ]. Therefore, almond trees in different cultivation areas have significant external and internal differences.…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Identification and Analysis of the MADS-Box Gene Family in Almond Reveal Its Expression Features in Different Flowering Periods

Liu

Zhang

et al. 2022

Genes

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The MADS-box gene family is an important family of transcription factors involved in multiple processes, such as plant growth and development, stress, and in particular, flowering time and floral organ development. Almonds are the best-selling nuts in the international fruit trade, accounting for more than 50% of the world’s dried fruit trade, and one of the main economic fruit trees in Kashgar, Xinjiang. In addition, almonds contain a variety of nutrients, such as protein and dietary fiber, which can supplement nutrients for people. They also have the functions of nourishing the yin and kidneys, improving eyesight, and strengthening the brain, and they can be applied to various diseases. However, there is no report on the MADS-box gene family in almond (Prunus dulcis). In this study, a total of 67 PdMADS genes distributed across 8 chromosomes were identified from the genome of almond ‘Wanfeng’. The PdMADS members were divided into five subgroups—Mα, Mβ, Mγ, Mδ, and MIKC—and the members in each subgroup had conserved motif types and exon and intron numbers. The number of exons of PdMADS members ranged from 1 to 20, and the number of introns ranged from 0 to 19. The number of exons and introns of different subfamily members varied greatly. The results of gene duplication analysis showed that the PdMADS members had 16 pairs of segmental duplications and 9 pairs of tandem duplications, so we further explored the relationship between the MADS-box gene members in almond and those in Arabidopsis thaliana, Oryza sativa, Malus domestica, and Prunus persica based on colinear genes and evolutionary selection pressure. The results of the cis-acting elements showed that the PdMADS members were extensively involved in a variety of processes, such as almond growth and development, hormone regulation, and stress response. In addition, the expression patterns of PdMADS members across six floral transcriptome samples from two almond cultivars, ‘Wanfeng’ and ‘Nonpareil’, had significant expression differences. Subsequently, the fluorescence quantitative expression levels of the 15 PdMADS genes were highly similar to the transcriptome expression patterns, and the gene expression levels increased in the samples at different flowering stages, indicating that the two almond cultivars expressed different PdMADS genes during the flowering process. It is worth noting that the difference in flowering time between ‘Wanfeng’ and ‘Nonpareil’ may be caused by the different expression activities of PdMADS47 and PdMADS16 during the dormancy period, resulting in different processes of vernalization. We identified a total of 13,515 target genes in the genome based on the MIKC DNA-binding sites. The GO and KEGG enrichment results showed that these target genes play important roles in protein function and multiple pathways. In summary, we conducted bioinformatics and expression pattern studies on the PdMADS gene family and investigated six flowering samples from two almond cultivars, the early-flowering ‘Wanfeng’ and late-flowering ‘Nonpareil’, for quantitative expression level identification. These findings lay a foundation for future in-depth studies on the mechanism of PdMADS gene regulation during flowering in different almond cultivars.

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Almond oil: A comprehensive review of chemical composition, extraction methods, preservation conditions, potential health benefits, and safety

Cited by 47 publications

References 270 publications

Exploring Plant-Based Cooking Oils as a Promising Topical Alternative to Sunscreen

Exploring Plant-Based Cooking Oils as a Promising Topical Alternative to Sunscreen

Microwave-assisted extraction of cellulose nanocrystals from almond (Prunus amygdalus) shell waste

Genome-Wide Identification and Analysis of the MADS-Box Gene Family in Almond Reveal Its Expression Features in Different Flowering Periods

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