Date Seeds: A Promising Source of Oil with Functional Properties

Mrabet, Abdessalem; Jiménez-Araujo, Ana; Guillén, Rafael; Rodríguez-Arcos, Rocío; Sindic, Marianne

doi:10.3390/foods9060787

Cited by 81 publications

(88 citation statements)

References 85 publications

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“…Therefore, it may be used in cosmetics as a preservative. Oleic acid is used in the cosmetic industry to improve skin permeability through topical applications [51].…”

Section: Chemical Composition Of Date Seedsmentioning

confidence: 99%

Date Fruit and Seed in Nutricosmetics

2021

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Many recent studies in the field of cosmetics have focused on organically sourced substances. Products made from organic materials are safe, high quality, cruelty-free, and more effective than those made from synthetic materials. Many organic compounds are known to be physiologically active in humans and have an extended storage capacity and long-lasting environmental effects. Agro-industrial waste has recently increased substantially, and the disposal of date palm waste, often performed in primitive ways such as burning, is harmful to the environment. Fruit processing industries generate over 10% of the total date seed waste daily, which could be converted into useful food products. Date fruit and seed are rich in sugar, vitamins, fiber, minerals, and phenolic compounds with antioxidant and anti-inflammatory properties that significantly promote human and animal health. This waste is rich in bioactive compounds and essential oils used in many kinds of food, medicine, and cosmetics. Most active cosmetic ingredients come from natural sources such as fruit, fish, and dairy, and recent research shows that date extract and seed oil help to reduce melanin, eczema, acne, and dry patches, while increasing skin moisture and elasticity. This review details the bioactive compounds and nutraceutical properties of date fruit and seed, and their use as cosmetic ingredients.

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“…Therefore, it may be used in cosmetics as a preservative. Oleic acid is used in the cosmetic industry to improve skin permeability through topical applications [51].…”

Section: Chemical Composition Of Date Seedsmentioning

confidence: 99%

Date Fruit and Seed in Nutricosmetics

2021

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“…Oil extracted from date seeds is a pale yellowish–green in color and has a pleasant odor [ 5 , 26 , 27 ]. Abdel-Nabey [ 19 ] reported that the crude oil extracted from date pits has a pale-yellow color and is semi-solid at refrigerated temperature (−40 °C).…”

Section: Chemical Composition and Feeding Values Of Date Wastementioning

confidence: 99%

Date (Phoenix dactylifera L.) by-Products: Chemical Composition, Nutritive Value and Applications in Poultry Nutrition, an Updating Review

Attia

Reda

Patra

et al. 2021

Animals

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Several by-products, such as whole cull dates, date stones (also called pits, seeds, kernels), sugar-extracted date pulp, are produced from date fruit processing industries. These by-products, particularly date stone meal represent 10 to 20% of the whole dates are wasted, causing environmental issues. However, the date stone is rich in various nutrients, such as nitrogen-free extract, fiber, fat, and minerals, which could be used as an alternative feed source in poultry nutrition. However, the high fiber content in date stone meal restricts its use in poultry diets. Whole date wastes and date pulp have lower protein, fiber and fat content than those in date stone meal. Several studies have investigated the use of date stone meal and other by-products as a replacement of dietary corn and barley on feed intake, growth, feed efficiency, and nutrient utilization in poultry. The compilation of results obtained from different studies indicates that date fruit by-products, particularly date stone meal, could be incorporated up to 10% levels, replacing corn or barley grains without hampering production performance, and this could reduce the production cost. Moreover, the use of date stone meal at lower levels (5–10%) sometimes shows better growth performance, probably due to the presence of bioactive principles such as antioxidants and phenolic compounds. The use of date stone meal in poultry diets may be practically important under certain circumstances not only under the COVID-19 crisis due to the lockdown of airports, dry ports, ports and traffic restrictions, but also in countries with a limited supply of classical feed resources and which depend on imported ones. Finally, it can recommend that using date stone meal (DSM) up to 5–10% in poultry diets positively affect the productive performance. Due to the variability in the nutritive value of the DSM, developing a formula for metabolizable energy (ME) of DSM = a (intercept) − b (slope) × crude fiber (CF) content should be considered to improve the precision of feed formula for poultry. However, the nutritional value of DSM might not only depend on crude fiber but also on other compounds.

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“…Figure 23 demonstrates that the highest biogas was found at more than 3.7 g-VS of volatile solid, 50% of the sludge and at all temperatures. The coded Equation (11) shows that the highest effect on the biogas volume was the volatile solid followed by sludge quantity. These factors affected positively on the biogas yield and their effect was on the quantity of biogas only.…”

Section: Biogasmentioning

confidence: 99%

“…It is a solid rectangular body inside the dates, tends to be brown in colour [7,8]. The date seed is used as a source of energy, nutritious drinks and polymer components [9][10][11]. In addition, some studies extract oil from the date seed in order to produce biodiesel [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Biogas Produced by Anaerobic Digestion Process and Biodiesel from Date Seeds

Alrefai

Benyounis

et al. 2021

Energies

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Dates are an important food source in many countries that produce different types of dates. Dates have a significant amount of waste, either from planting or eating them. A large amount of seeds are produced from eating it. This study is considered to explore the quantity and the quality of biogas produced from the Sagai date seeds through the anaerobic digestion process (AD) before and after oil extraction and exploitation of oil in biodiesel production. In addition, the study aims to tests the resulted digestate from the AD process. This test was performed to ensure that the digestate contains the three basics elements (N, P and K) to be used in agriculture. In its preparation, the date seeds were ground after washing via a grinding machine without exposure to any other treatment process. Design of Experiments (DOE) was applied in determining the effect of temperature, volatile solid and sludge quantity on the resulted biogas. The energy balance at the optimum results was calculated. The highest biogas volumes from the AD of date seed before and after oil extraction were 4140 cc and 3534 cc, respectively, at 37 °C, 4.2 g-VS and 50% sludge quantity. While the highest methane/g-VS were 1143.8 cc/g-VS and 949.6 cc/g-VS, respectively, at 37 °C, 1.1 g-VS and 50% sludge quantity. The oil obtained using the Soxhlet method at 70 °C, 1:4 ratio of date seeds to n-hexane solvent and 5 h reaction time was 16% of the date seed mass (79% biodiesel and 9% glycerine). Therefore, the resultant effect from the main findings indicated that the study supports the investigation of the possibility of exploiting date seeds in the production of biogas, biodiesel and bio-fertiliser.

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Date Seeds: A Promising Source of Oil with Functional Properties

Cited by 81 publications

References 85 publications

Date Fruit and Seed in Nutricosmetics

Date Fruit and Seed in Nutricosmetics

Date (Phoenix dactylifera L.) by-Products: Chemical Composition, Nutritive Value and Applications in Poultry Nutrition, an Updating Review

Biogas Produced by Anaerobic Digestion Process and Biodiesel from Date Seeds

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