[Latin Name] Linum Usitatissimum L.

[Plant Source] from China

[Specifications]SDG20% 40% 60%

[Appearance] yellow brown powder

Plant Part Used:Seed

[Particle size] 80 Mesh

[Loss on drying] ≤5.0%

[Heavy Metal] ≤10PPM

[Storage] Store in cool & dry area, keep away from the direct light and heat.

[Shelf life] 24 Months

[Package] Packed in paper-drums and two plastic-bags inside.

[Net weight] 25kgs/drum

Product description:

Flaxseed extract is a kind of plant ligan most notably found in flaxseed. Secoisolariciresinol diglycoside, or SDG is existed as its main bioactive components. SDG is classified as a phytoestrogen since it is a plant-derived, nonsteroid compound that possesses estrogen-like activity. Flaxseed extract  SDG has weak estrogenic activity, when intake as food it will be trasfer to flax ligan which have same structure with estrogens.The level of SDG in flaxseed typically varies between 0.6% and 1.8%. Flaxseed extract powder SDG can reduce the blood lipid, cholesterin and triglyceride, it can also prevent for apoplexy, hyperension, blood clots, arteriosclerosis and arrhythmia. In addition, flax seed extract powder SDG is benificial for diabetes and CHD.

Main Function:

1.Flaxseed extract used to lose weight. Can burn surplus fat of Body;

2.Flaxseed extract will reduce allergic reaction, reduce asthma, improve arthritis;

3.Flaxseed extract with the function of improving female menstrual period syndrome;

4.Flaxseed extract can reduce the bad influence of hazardous chemicals produced when under pressure, control Stress, reduce depression and insomnia;

5.Flaxseed extract will improve skin fat content, moisten the skin smooth, soft and flexible, make the skin breath and sweat to normal, to mitigate various skin problems.

Biochemistry: Protein structure. Drawing protein chains. Peptide bonds. How to determine the net charge of a peptide chain at different pH’s. Primary structure. Weak interactions; electrostatic interactions, hydrogen bonds, Van der Waals interactions. Hydrophobic effect. Disulfide bonds. Secondary structure; the alpha helix, beta-pleated sheets. Alpha-keratin. Collagen. Tertiary structure. Quaternary structure

This is a recording of a tutoring session, posted with the student’s permission.

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For a list of all the available video series, arranged in suggested viewing order, go to my website.

For the “Acids and bases” handout discussed in these videos, click here:

https://www.freelance-teacher.com/acid_base_reactions.pdf

For the “Amino acids” handout discussed in these videos, click here:

https://www.freelance-teacher.com/amino_acids.pdf

For a document containing the video (1) homework problems, click here:

https://freelance-teacher.com/protein_structure_homework1.pdf

TABLE OF CONTENTS
VIDEO (1)
0:00 Drawing protein chains. Peptide bonds
23:40 How to determine the net charge of a peptide chain at different pH’s
40:10 Characteristics of peptide bonds

VIDEO (2)
Homework
φ and ψ
Primary structure
Secondary structure. The alpha helix
Weak interactions. Electrostatic interactions
Hydrogen bonds

VIDEO (3)
Homework
Functions of proteins
Van der Waals interactions
Hydrophobic effect
The alpha helix, continued
Alpha-keratin
Collagen

VIDEO (4)
Homework
Disulfide bonds
Disulfide bonds in alpha-keratin
Homework, continued. More about collagen
Beta-pleated sheets

VIDEO (5)
Homework
Tertiary structure
Quaternary structure

VIDEO (6)
Homework

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