Botanical Name – Ligustrum lucidium
Chinese Name – NU ZHEN ZI
English Name – Glossy Privet
Tincture made by a process of hydro-ethanolic percolation, with a ratio of 1 part Glossy Privet Fruit to 3 parts liquid. Liquid comprises of 75% water and 25% sugar beet derived ethanol.
Ligustrum lucidum, commonly called broad-leaf privet, Chinese privet glossy privet, tree privet or wax-leaf privet, is a species of privet (genus Ligustrum.) It is a flowering plant in the olive family, Oleaceae, native to the southern half of China and naturalized in many places including Spain, Italy, Algeria, Canary Islands, New Zealand, Lesotho, South Africa, Japan, Korea, Australia, Norfolk Island, Chiapas, Central America, Argentina, and the southern United States.
Ligustrum lucidum is an evergreen tree growing to 10 m tall and broad. It is often used as an ornamental tree, sometimes in variegated forms. It has become an invasive species in some areas where it has been introduced.
It has been used in traditional Chinese medicine for over 1,000 years.
Medicinal Action and Uses
Hepatic – Glossy Privet can be used to treat weak kidney and liver energy such as menopausal problems (especially premature menopause.) It is considered a great herb to combat Hepatitis C.
Immunostimulant – It can enhance non-specific immune function and have two-way adjustment on immune dysfunction. It can also increase low white blood cell count due to chemotherapy or radiation treatment.
Ophthalmic – It is taken internally in the treatment of complaints associated with blurred vision and cataracts. It is also known to reduce macular degeneration.
Product is supplied in amber PET bottles with tamper evident screw tops.
Product is supplied in amber PET bottles with tamper evident screw tops. This keeps the contents fresh and protected from light. Look out for the QR code on the label - you can scan this with your smartphone to download the Certificate of Analysis document for this product.
What is a Tincture?
A herbal tincture is a concentrated extract of one or more herbs. The liquid in a tincture is a combination of alcohol and water. A tincture must contain at least 20% alcohol for preservation purposes. Alcohol concentrations tend to vary between 20% and 60%, but can be as high as 90% in some circumstances. At Herbal Apothecary we generally produce tinctures with alcohol concentrations of 25% - 45%. We use ethanol derived from sugar beat.
How Is A Tincture Made?
To produce the Ligustrum lucidium / NU ZHEN ZI / Glossy Privet Tincture we combine a quantity of herb with a proportional amount of liquid. Depending on the herb and the strength of tincture required this ratio can be 1:2, 1:3 or 1:4. The herb, alcohol and water is placed in a production vessel suitable for the size of the batch.
Traditionally, tinctures have been made by a process of maceration. This is where the herb sits in the liquid and over a period of time the plant cells break down. This allows the plant matter to be released into the liquid. Occasionally the producer might agitate the mixture to help the process along.
At Herbal Apothecary we have spent decades improving our tincture production processes. We use a system called Hydro-Ethanolic Percolation. Percolation is where liquid slowly passes through the herb, from top to bottom. In our case, the liquid is not simply passed through the herb once and then collected. Instead, it is continually cycled through the herb. Hydro-Ethanolic Percolation is a combination of maceration and traditional percolation. The circulation of liquid through a spray head agitates the herb, helping the key chemical compounds to be released into the liquid.
Our production vessels are primarily stainless steel. We use low voltage (24v) pumps to circulate the liquid. We have also developed a system of float switches and relays. These ensure the pumps only activate when an adequate level of liquid is present in the sump at the bottom of the vessel. It can take some time for the liquid to filter through the herb.
We produce most of our tinctures using dried herbs, although we sometimes use fresh. It's important that the size of the pieces of herb in the production vessel are small enough for the alcohol to thoroughly penetrate. No prior processing is required for flowers and leaves which are smaller and more delicate. However, for roots, bark and berries which tend to be tougher and larger we use herbs which are diced up into small pieces. This ensures that the maximum amount of plant material can be extracted into the liquid.
The manufacturing process takes 7 days to complete. Once the process is finished, the herb is pressed to extract every last drop of precious liquid. The Ligustrum lucidium / NU ZHEN ZI / Glossy Privet Tincture is filtered and then stored in bulk containers, before being bottled in smaller 250ml, 500ml and 1000ml quantities.
Click here if you'd like to know more about our herbal tincture manufacturing technology. At Herbal Apothecary we are committed to research - we want to provide a robust evidence base for the products we produce. As a result we review our manufacturing systems and processes in order to ensure we're making best use of the raw ingredients.