2021 Plant Extracts Review Issue 1-Delore

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2021 Plant Extracts Review Issue 1

Date : 2021/10/29

The First Issue - Olive Leaf Extract, the Data Tell the Answer

The olive branch and the dove are used in Europe as a symbol of peace, stability and abundance.

In Europe and America, olive refers to Olea europaea

It is oil crops of olea europaea L., a well-known subtropical fruit tree and an important economic forest tree.

It is fundamentally different from the olive in China

Chinese Olea europaea is mainly distributed in Gansu, Guangdong, Guangxi, Yunnan and Sichuan, etc.

The processed Olea europaea fruit has a wide range of uses in pharmacy, daily use, chemistry, food, textile and other industries.

Olive bitter glycosides have antioxidant, antibacterial, immune system strengthening and cardiovascular disease reducing effects

The extract under review is olive leaf extract: olive bitter glucosides 

Olive bitter glucoside is generally a brownish-yellow or yellowish-green powder

Chinese Name: olive bitter glucosides

The source of the raw material under review is from Gansu, China

For the olive leaf extract samples, we selected 40% olive bitter glucosides samples from two companies in Shaanxi, China (A & B)

Cost of this evaluation: 2,230 RMB for testing (public price)

▽ Results of Raw Material Testing

Visual Photograph of Raw Materials

Color may vary from device to device

Most of the raw materials are dried olive leaves, with branches mixed in

Details can be found in the video above

Raw material from Gansu, China

The content of olive bitter glycosides measured by HPLC is 4.6%.

The content of lead(Pb) is relatively high in the heavy metal content test, which varies from one origin to another due to the differences in heavy metal content in the soil.

▽ Extract Test Results

Sample A . Actual Video

Sample B . Actual Video

Product A is from company A in Shaanxi, product B is from company B in Shaanxi

The calibrated olive bitter glycoside content is 40%.

Sample A was a yellow-green powder and sample is a brownish-yellow powder

 In terms of active ingredient content, the active ingredient content of sample A and sample B are 39.47% and 39.33%.

(Data for Reference Only)

As for heavy metal detection, the data of the samples are as shown above

 (extraction method has a certain effect on the heavy metal content)

In terms of solvent residues, the methanol and ethanol content of sample B is relatively higher compared to sample A

▽ Expansion

Olive oil is not frozen and extracted from olives?

 That's right.

 The raw material for producing olive oil is not olives, but Olea europaea

What is the difference between Olea europaea and olive?

Different origins:

Olea europaea is an oil crop of olea europaea L., native to the Syrian region of the Middle East.

Through the promotion of Greece, it has been extended to the Mediterranean region and neighboring countries.

It has been cultivated for more than 4,000 years.

Of course, olive trees were also introduced from Europe to the south of the Yangtze River in China a long time ago.

The olives belong to the Canarium album

 Also known as green olive and green fruit

Native to Southern China

It is found in Fujian, Taiwan, Guangdong, Guangxi, Yunnan, etc. The two main species are white olive and black olive.

Different consumption methods:

The Olea europaea is usually made into olive oil

It is often found in daily life

Olive oil is rich in nutrients and functional active ingredients

It has the functions of preventing cardiovascular diseases and anti-tumor.

Olives can be eaten directly, they are a bit astringent at first, but as you chew on them, they have a refreshing aftertaste that is pleasant to the palate

Olives are good for digestion, especially during the New Year's holidays when we eat lots of fish and meat.

Different values:

Olea europaea are widely used in the pharmaceutical, food and chemical industries.

Olives, on the other hand, can be made into candied (preserved) fruit in China.

The brown licorice olives and the dark brown salt olives are commonly found in our daily life.

They can also be made into a small dish to accompany porridge, and shown on the table of the public

That's all in this issue!

Note: The content of this article is original to Delore Group, the copyright of which belongs to Delore Group (stolen pictures must be investigated), part of the content from the network provided, reference to the content has been marked with the source disclaimer.

①The plant extract review section only tests raw material samples and product samples, and does not make objective conclusions

②Some samples may have different test results due to special reasons, the test results are for reference only.

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