Related Experiment Video
Updated: Aug 16, 2025
06:34
The Caco-2 Cell Bioassay for Measurement of Food Iron Bioavailability
Published on: April 28, 2022
4.9K
Mineral and Trace Elements in Nutritious Flours: Total Contents, In Vitro Bioaccessibility and Contribution to
Thaís L Souza1, Laís A Souza2, Isa S Barbosa1
1Instituto de Química, Universidade Federal da Bahia, Campus Universitário de Ondina, Ondina, Salvador, Bahia, 40170-115, Brazil.
Biological Trace Element Research
|December 23, 2022
Summary
Nutritious flours offer essential minerals like copper (Cu), iron (Fe), and zinc (Zn). This study assessed their total content and in vitro bioaccessibility, finding low bioaccessible fractions for these key minerals.
Area of Science:
- Food Science
- Nutritional Science
- Analytical Chemistry
Background:
- Increasing demand for healthier diets emphasizes the importance of nutrient intake from alternative sources like flours.
- Assessing total nutrient content and bioaccessibility is crucial for understanding actual nutrient or contaminant intake from food.
- Nutritious flours derived from fruits, vegetables, and cereals are gaining popularity as healthier dietary options.
Purpose of the Study:
- To determine the total content of essential minerals (Cu, Fe, Zn) in nutritious flours.
- To estimate the bioaccessible fraction of Cu, Fe, and Zn using an in vitro gastrointestinal model.
- To analyze mineral profiles and their relationships using multivariate statistical methods.
Main Methods:
- Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) was employed for elemental analysis after microwave acid digestion.
- The Unified Bioaccessible Method (UBM) was utilized for in vitro assessment of mineral bioaccessibility across gastric and gastrointestinal phases.
- Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA) were applied for data interpretation.
Main Results:
- Concentrations (μg g⁻¹) varied: Ca (341-6275), K (2984-13,953), P (476-6110), Na (<0.39-2995), Fe (1.4-167), Cu (<0.01-59.6), and Zn (<0.07-30.3).
- Bioaccessible fractions for Cu, Fe, and Zn were generally low, ranging from 0.96% to 40% in the gastrointestinal phase.
- Mineral data exhibited a tendency to form three distinct groups based on PCA and HCA.
Conclusions:
- The study quantified key mineral content in nutritious flours and evaluated their in vitro bioaccessibility.
- Low bioaccessibility of Cu, Fe, and Zn suggests potential limitations in nutrient absorption from these flour sources.
- Understanding mineral profiles and bioaccessibility is vital for optimizing the nutritional benefits of alternative food sources.
More Related Videos
04:54Assessing Mineral Availability in Fish Feeds using Complementary Methods Demonstrated with the Example of Zinc in Atlantic Salmon
Published on: October 29, 2021
3.1K
05:55High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize Zea mays L.
Published on: June 16, 2018
7.0K
Related Concept Videos
02:35Key Elements for Plant Nutrition
19.0K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
19.0K
01:26Minerals
390
Minerals are essential nutrients that the human body needs in small amounts to work properly. They play a vital role in many bodily functions, such as building strong bones and transmitting nerve impulses. Some minerals are needed for hormone production or to maintain a normal heartbeat. Major minerals include calcium, phosphorus, potassium, sulfur, sodium, chlorine, and magnesium, while trace minerals include iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium.
Major...
Major...
390
01:31Essential Minerals for Bone Health
4.3K
The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
4.3K
01:27Mineral, Vitamin and Water Absorption
607
Electrolytes are essential minerals and ions primarily obtained from the diet and absorbed through the gastrointestinal tract. Most electrolytes are absorbed in the small intestine. While the absorption of iron and calcium primarily occurs in the duodenum, calcium is also absorbed in the jejunum and ileum. In these regions, passive diffusion contributes to its absorption alongside active transport mechanisms in the duodenum. These ions can exit the enterocytes through specialized active...
607
01:13Bioavailability: Overview
3.0K
Bioavailability refers to the proportion of an unaltered drug that, after administration, enters the systemic circulation and can be distributed to the desired action site. Factors such as gastrointestinal (GI) absorption and liver biotransformation influence the bioavailability of a drug when it is administered orally. When a drug is administered intravenously, it enters the systemic circulation directly; by definition, its bioavailability is assumed to be 100%. The bioavailability of an...
3.0K
01:23Factors Influencing Bioavailability: First-Pass Elimination
6.6K
When a drug is taken orally, it undergoes a journey starting from the gastrointestinal (GI) tract, passing through the portal vein, reaching the liver, and finally entering the systemic circulation. This process involves the absorption of the drug across the GI tract. The liver is the primary site for metabolizing the drug, with some metabolism also occurring in the gut wall. This journey significantly reduces the quantity of the drug that reaches the systemic circulation, a phenomenon known as...
6.6K