9. Gums
Wound or injury products of woody plants
Their acidic groups interact with small amounts of
calcium, magnesium and potassium to create
viscous solutions or gels in water
10. Industrial Uses
Alter texture of food products
Stabilize emulsions, retain moisture, thicken liquids
and suspend particles - toothpaste
In frozen products prevent ice crystals
Coat "instant mixes" so won’t react water in air
Hold some tablets together or create time release
Make the paper more water resistant
12. Polysaccharides
-glucan - high molecular weight polymers consisting of
chains of sugars (mono- or oligo-saccharides)
The simplest polysaccharides are cellulose and starch which
are polymers of glucose only
Immune function - structurally dependent activity
Gandelan active as anti-cancer agent
Ganoderma lucidum
reishi mushroom
O
O
O
O
O
CH2
CH2OH
OH
OH
OH
OH
O
CH2
OH
OH
O
CH2
OH
OH
Section of
Beta-1,6'D-Glucan
13. -glucans
Amount of -glucan
chains greater in fruiting
body vs mycelium
Structure also different
14. Wild vs. Grain culture
-glucan vs. α-glucan
16. Alkylamides (aka alkamides)
Essential fatty acids linked to an amine
group
Structurally related to animal
endocannabinoids
17. Distribution of Amides
Echinacea angustifolia
E. purpurea
Prickly ash bark
Spilanthes
Black peppers
Red peppers (chilis)
commons.wikimedia.org/wiki/
We will return to Echinacea
30. Steroid Glycoside
Source of prednenolone and progesterone
Co-occurs with isomer yamogenin
Hard to cultivate wild yams
Diosgenin
www.chemblink.com
Mexican wild yam
Dioscorea mexicana
31. Phenolic compounds
Benzene ring
Cyclohexane structure – three double bonds.
The basis of all ‘aromatic’ chemicals
Hydroxyl group (OH)
One or more attached to benzene ring
Functional groups (= aryl groups)
Methyl CH3
Methyoxy CH3O
Amino NH2
Carboxyl COOH
Lactone ring Coumarins
CO2H
OH
Salicylic acid
32.
33. Phenols
Phenols are often glycosides
Simple Subclassification
• Flavanoids
• Tannins
40. Lignans
OH
OCH 3
OCH 3
OCH 3
OCH 3
H3CO
OCH 3
Schizandrin Schisandria chinensis - up to 30 lignans in seeds
• Hepatoprotective
• Inhibits lipid peroxidation
43. Sandasi, M. et al. (2014) Hyperspectral imaging and chemometric modeling of Echinacea – A
novel approach in the quality control of herbal medicines. Molecules 19: 13104-13121.
Echinacea angustifolia
Echinacea pallida
Echinacea purpurea
44. Uncertainty with Production of
Echinacea Products
Ethanol extracts produce higher levels of alkylamides and
phenolics
Block inflammatory response, suppressing symptoms of with
infection
More concentrated in roots
Signatures?
Echinacoside (phenolic) in E. angustifolia not E. purpurea.
Echinacin (alkylamide) in E. angustifolia and E. pallida.
45. Uncertainty with Echinacea
Water extracts contain polysaccharides and glycoproteins
(arabinorhamnogalactan)
Enhance immunity by increasing production of cytokines
Appear to be present in aerial parts
47. Alkamides (Alkylamides)
Most abundant in roots of E. purpurea and E.
angustifolia
Much lower amounts in aerial parts E. purpurea
and E. angustifolia
As a whole, much lower amounts in E. pallida
Mudge, E. et al. (2011) Analysis of alkylamides in Echinacea plant materials and
dietary supplements by UFLC with diode array and MS detection. J. Agri. Food
Chem. 59: 8086-8094.
48. E. purpurea
Perry, NB et al. (1997) Alkamide levels in Echinacea purpurea: a rapid analytical method
revealing differences among roots, rhizomes, stems, leaves and flowers. Planta Med. 63: 58-62
49. Root Tissue
1. cynarin
2. echinacoside
3. cichoric acid
4. echinacoside derivative
5. verbascoside
6. alkamide
7. alkamide
8. alkamide
9. alkamide
Sloley, DB et al. (2001) Comparison of chemical components and antioxidant capacity of
different Echinacea species. J Pharm. Pharmacol. 53:849-857
50. Mean alkamide levels (mg/g dry weight) in different parts of E.
purpurea followed by standard deviation. Bold significantly
different (P<0.01)
51. E. Purpurea and Quality Control
Alkamide distribution flower heads important to
quality control
13 polyacetylene artifacts formed during
storage, since they are found in dried but not
fresh roots of E. pallida.
Second cut harvest contain cichoric acid no
alkamides
Arabinogalactans - microbiological degradation
52. Cichoric Acid
Degraded during processing and juice extraction
This occurs with many plants – black tea
Ascorbic acid (5mM) or EtOH (≥ 45%) inhibits
degradation
short term during extraction
longer term storage
Nusslein, B. et al. (2000). J. Nat. Prod. 63: 1615-1618.
53. E. purpurea Cultivar Screening
Trout Lake Farm
Mechanical harvesting
Flower heads, size and uniformity of flowering time
Large smooth leaves (leaf hairs capture dirt)
Deep purple color
Intense tongue tingle
(Letchamo et al. 1999)
54. Field of 2 million identified 420 optimal plants
Used organoleptic and HPLC analysis to select 360
propagation lines
20-30 of each line replanted in three different
locations
Used phytochemical analysis on the aerial parts to
analyze at 4 stages of flower development