is one of the unwanted ingredients in Aloe vera
and Aloe vera-derived products. Aloin content
is quantified by HPLC.
we test a variety of crops on total and individual
anthocyanin content by using the HPLC technique.
we test neem
oil for azadirachtin-A content using the HPLC technique.
Azadirachtin-A is a biodegradable compound with
insecticide and fungicidal properties.
· Catechins: Catechins
are antioxidants present in teas. In general, green
tea has more catechins than black tea. Catechin
content tends to decrease over time in brewed teas.
We test catechins (total and individual catechins)
· Curcumin: Curcumin
is a powerful antioxidant and the main ingredient
in tumeric and curries. Preliminary research in
our lab indicates there is quite some variation
in curcumic content in different brands of turmeric
an antibiotic banned in the EU and US. However,
it sporadically shows up e.g. most recently in Germany.
· Coffee Adulteration:
Arabica is a more expensive coffee compared
to Robusta, while Robusta typically has
more caffeine than Arabica. We test for
adulteration--e.g. unwanted blending of Robusta
coffee in Arabica coffee.
· Di-Coumerol: Dicoumerol
shows up in moldy hay (mainly clover), high amounts
can prevent Vitamin K uptake and might prevent blood
Department of Agronomy at Purdue University
has several good sources on hay quality.
· Endophyte Testing: we
test for endophyte presence in forage grass (tall
fescue and timothy). This test is DNA based, we
use DNA primers specific for the endophyte (Neotyphodium
coenophialum) to perform PCR on the forage sample.
to read more about endophyte and tall fescue by
the U.of Tennessee.
an ergot alkaloid found forage crops and is synthesized
by endophytes. High ergovaline content has negative
effects on animal feeding and health. We test for
ergovaline by HPLC.
we test a variety of vegetables (broccoli, cabbage,
canola, watercress and others) for glucosinolate
content by HPLC. Glusosinolates are known anti-oxidant
compounds. We co-authored one science
publication on the detection of gluconasturtiin
in watercress. Low glucosinolate content is required
in canola to avoid feeding problems in livestock.
We test for glucosinolates in canola by HPLC.
(active ingredient Maca Lepidium meyenii).
This is the primary glucosinolate in Maca
(Lepidium meyenii) and it's believed to
give extra energy to humans.
· HMF (hydroxy
methyl furfural) in honey: HMF is a measure of honey
quality, it indicates age and if the honey was heated
during processing. The EU limit is less than 40
· Hop (Humulus lupulus
L) Acids Analysis:
we test hops on alpha and beta acids by HPLC.
· Isoflavone Testing:
in this test we employ the high pressure liquid
chromatography (HPLC) technique to measure individual
and total content of isoflavones in soybean.
· Resveratrol Analysis: resveratrol
is a known anti-oxidant found in wine, and is believed
to prevent heart disease by inhibiting platelet
aggregation. We use HPLC to measure resveratrol
content in wine and grapes.
· Sugar Analysis:
we test a variety of crops and foods for sugar content.
We can test for individual sugars such as sucrose,
glucose, maltose and fructose. We test for organic
acids as well, for example, pyruvic, acetic, citric,
and lactic acid.
· RAPD DNA Analysis:
RAPD (Random Amplified Polymorphic DNA) analysis
is a service we offer to our customers who want
to determine the identity of a crop variety. For
instance, when in doubt if the cultivar you bought
is the correct one or mixed with another cultivar,
we can run a RAPD to determine what cultivar you
·SNP DNA Analysis: SNP
(Single Nucleotide Polymorphism) analysis is like
the RAPD technology, expect with SNP specific DNA
primers are designed to determine the identity of
a crop variety or any other organism.
·Urea/Triazone Analysis: we
test urea fertilizer on urea and triazone content
(if present) by HPLC. Triazone is a nitrogen rich
compound that is a slow release fertilizer.
·Tocopherol Testing: we
test a variety of crops and foods for tocopherol
(Vitamin E) content. We
use HPLC to test for alpha, beta, delta, and gamma
· Bone meal Testing:
we test for ruminant and porcine presence in feed
material using PCR.
· Please give us a call for quotes on the
above testing services.