CAMELLIA SINENSIS INGREDIENT GUIDE
Compare LongBio green tea ratio extracts, tea-polyphenol grades and L-theanine specifications.
Botanical source and general specification
| Botanical source | Camellia sinensis leaf (per the grades listed) |
|---|---|
| Plant parts used | Leaf |
| Markers | Tea polyphenols (UV) and L-theanine on a dedicated grade |
| Grade types | Marker-standardised (20%, 50%, 98% polyphenols; 20% L-theanine) and ratio (4:1) |
Compare Available Grades
Green Tea Extract Powder 20% Tea Polyphenols
Camellia sinensis Leaf extract; Tea polyphenols >=20% by UV; result 22.13%, supported by representative batch LXLC240320.
L-Theanine Green Tea Extract Powder 20%
Camellia sinensis (L.) Kuntze Leaf extract; L-Theanine 20% by HPLC; result 20.51%, supported by representative batch LXLC170620.
Green Tea Extract Powder 98% Tea Polyphenols
Camellia sinensis Leaf extract; Tea polyphenols 98% by UV; result 98.11%, supported by representative batch LXLC250702.
Green Tea Leaf Extract Powder 4:1
Camellia sinensis Leaf extract; Extract ratio 4:1 by TLC; complies (source filename said 45% catechins, corrected to COA body), supported by representative batch LXLC190611.
Green Tea Leaf Extract Powder 50% Tea Polyphenols
Camellia sinensis Leaf extract; Tea polyphenols >=50% by UV; result 50.18%, supported by representative batch LXLC180808.
Grade comparison: green tea extract powder
| Your requirement | Grade to specify | Why |
|---|---|---|
| You need the highest polyphenol level | 98% Tea Polyphenols | Highest declared polyphenol level in the range |
| Your claim names L-theanine | 20% L-Theanine | A different marker on a dedicated grade — not interchangeable with polyphenols |
| You need a mid or low polyphenol level | 50% or 20% Tea Polyphenols | Adjacent levels allow dose and cost to be matched |
| You need a non-standardised base | 4:1 ratio | Ratio grade with no declared marker |
In short: LongBio supplies green tea extract powder standardised to 20%, 50% and 98% tea polyphenols, an L-theanine grade at 20% by HPLC, and a 4:1 ratio leaf extract. Polyphenol percentage, L-theanine content and extract ratio are distinct purchasing specifications.
| Grade | Plant part | Specification | Method | Representative result | Particle size | Loss on drying | Appearance |
|---|---|---|---|---|---|---|---|
| Green Tea Extract Powder 98% Tea Polyphenols | Leaf | Tea polyphenols 98% | UV | 98.11% | 98% through 80 mesh | ≤5.0%; result 4.17% | Fine reddish-brown powder |
| Green Tea Leaf Extract Powder 50% Tea Polyphenols | Leaf | Tea polyphenols ≥50% | UV | 50.18% | 100% through 80 mesh | ≤5.0%; result 4.08% | Fine brown powder |
| Green Tea Extract Powder 20% Tea Polyphenols | Leaf | Tea polyphenols ≥20% | UV | 22.13% | 100% through 80 mesh | ≤5.0%; result 4.08% | Fine brown powder |
| L-Theanine Green Tea Extract Powder 20% | Leaf | L-Theanine 20% | HPLC | 20.51% | 98% through 80 mesh | ≤5.0%; result 4.15% | Fine brown powder |
| Green Tea Leaf Extract Powder 4:1 | Leaf | Extract ratio 4:1 | TLC | Complies | 100% through 80 mesh | ≤5.0%; result 3.94% | Fine yellow-brown powder |
MOQ typically 1 kg; evaluation samples typically 10–20 g; typical lead time 7–15 working days. Representative values support initial comparison only — the offered-lot COA governs shipment release.
Buyer Decision Guide
A 4:1 ratio extract, tea-polyphenol standardised powder and L-theanine grade are not equivalent. Match the assay, method, sensory requirements and current batch COA to the formulation.
- Shortlist the required product form and target specification.
- Compare the current COA method, limits and batch results.
- Test the sample in the intended formulation.
- Approve the order specification, packing and destination-market documentation.
Qualification and COA Review
Each linked product page records its own evidence status. Representative results support initial comparison only; final acceptance is based on the approved specification, current offered-batch COA and buyer qualification.
Certification coverage for this product line
Botanical extract powders in this range are produced at the certified Zhashui site of Shaanxi Longsheng Biotechnology Co., Ltd., which holds five third-party-issued certificates: FSSC 22000 (certificate CN26/00005265, issued by SGS United Kingdom Ltd, valid 13 Jul 2026 – 12 Jul 2029), ISO 22000:2018 (CN26/00005266, issued by SGS United Kingdom Ltd, valid 13 Jul 2026 – 12 Jul 2029), SGS cGMP (CN26/00005948, valid 12 Aug 2026 – 12 Aug 2027), Star-K Kosher Pareve (account NCZSI67Q, valid through 31 Mar 2027) and Halal (3391260000, issued by Shandong Halal Certification Service, valid 28 Jun 2026 – 25 Jun 2029). The original certificate documents are published on the certificate register for Shaanxi Longsheng Biotechnology, which also carries the issuing body, registry identifier and validity date for each certificate.
Frequently Asked Questions
How do I choose a green tea extract powder grade?
A 4:1 ratio extract, tea-polyphenol standardised powder and L-theanine grade are not equivalent. Match the assay, method, sensory requirements and current batch COA to the formulation.
Can I compare the current batch COAs before ordering?
Yes. Request the applicable current or representative COA for each shortlisted grade and compare product identity, method, limits and results.
Are different ratios or assay percentages interchangeable?
No. Ratio extracts and standardised assay grades represent different purchasing specifications and should be qualified separately.
Can I request samples for formulation testing?
Yes. Provide the target grade, application, destination market and expected volume so sample availability can be confirmed.
What should be included in a quotation request?
Send the product grade, analytical limits, quantity, packing, destination, application and any required compliance documents.
Does website information replace the shipment COA?
No. The approved order specification and shipment-batch COA remain the controlling quality records.
Can specifications or packaging be customised?
Selected analytical limits, particle properties and packing may be reviewed case by case before quotation.
What is the difference between tea polyphenols and L-theanine, and can one substitute the other?
They are different constituents on dedicated grades. The polyphenol grades declare tea polyphenols at 20%, 50% or 98% by UV, while the L-theanine grade declares that single amino acid at 20%. A polyphenol specification cannot be satisfied by the L-theanine grade and vice versa, so if your label names one of them, the grade must be chosen accordingly.
Request a Grade Comparison
Send your application, target assay or ratio, annual volume, destination and document requirements.