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Related Concept Videos

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Sample Preparation for Analysis: Overview01:21

Sample Preparation for Analysis: Overview

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Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
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Aromatic Compounds: Overview01:25

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In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
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Precipitation Processes01:12

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The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
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Extraction: Effects of pH00:53

Extraction: Effects of pH

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Consider a neutral form of an amine, B, with a partition coefficient, K, in a liquid mixture containing organic and aqueous phases. The pH of the aqueous phase affects the charge on acidic and basic solutes, and the charged form is usually more soluble in the aqueous phase. Suppose the conjugate acid form of the amine is soluble only in the aqueous phase while the base form is soluble in both phases. Then the distribution coefficient, D, can be given as the ratio of amine concentration in the...
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Qualitative Analysis01:10

Qualitative Analysis

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Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of analysis based on the hierarchy of analytical goals. This hierarchy is significant as it provides a structured approach to scientific research, with qualitative analysis serving as the initial step, providing essential information before moving on to quantitative or other forms of analysis.
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Argan Oil: Chemical Composition, Extraction Process, and Quality Control.

Said Gharby1, Zoubida Charrouf2

  • 1Laboratory Biotechnology, Materials and Environment, Department of Chemistry and Physics, Polydisciplinary Faculty of Taroudant, Ibn Zohr University, Taroudant, Morocco.

Frontiers in Nutrition
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Summary

Argan oil, extracted from Moroccan argan tree kernels, offers nutritional and cosmetic benefits. Its production, primarily by women

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Area of Science:

  • Agricultural Science
  • Food Science
  • Cosmetic Science

Background:

  • Argan oil is a globally distributed product originating from Morocco's Argania spinosa tree.
  • The Argan tree holds significant social, economic, and environmental importance, aiding desertification control.
  • Argan oil production, traditionally by women, has evolved to semi-industrial processes, enhancing quality and scale.

Purpose of the Study:

  • To review the chemical composition, nutritional, and cosmetic value of argan oil.
  • To detail various argan oil preparation methods, including food and cosmetic grades.
  • To discuss quality control, oxidative stability, and authenticity assessment of argan oil.

Main Methods:

  • Review of existing literature on argan oil.
  • Analysis of different extraction and preparation techniques.
  • Examination of quality control and stability assessment methods.

Main Results:

  • Argan oil quality, stability, and purity are influenced by extraction processes and parameters.
  • Two grades of argan oil (food and cosmetic) are produced based on kernel preparation (roasting vs. unroasted).
  • Modern extraction technologies enable large-scale, high-quality argan oil production.

Conclusions:

  • Argan oil's diverse applications stem from its unique composition and properties.
  • Understanding extraction influences is crucial for optimizing argan oil quality and authenticity.
  • Argan oil represents a valuable resource for local economies and sustainable development.