Honeybush (Cyclopia
Intermedia)
Honeybush tea is an indigenous herbal tea to South Africa, having a
pleasant taste and flavour. "Heuningtee, Bergtee, Boertee,
Bossiestee, Bushtea" are some of the many names the tea is called (35).
According to Kies (1951), the earliest mention of the honeybush plant in
botanical literature was in 1705. Although it is not clear whether the
bush was used for consumption in those days, it can be assumed that the
local inhabitants soon realized the health giving properties of the tea
in their search for natural herbs and medicines (33).
The leaves, stems and flowers of the Cyclopia species are used
to manufacture a sweet herbal infusion. The indigenous shrub, belonging
to the Cape fynbos biome, grows in the coastal districts of the Western
and Eastern Cape Provinces, from Darling to Port Elizabeth, being
bounded on the north by the Cederberg, Koue Bokkeveld, Klein Swartberg,
Groot Swartberg and Kouga mountain ranges. Cyclopia Vent. (tribe
Podalyrieae) is a genus of +/- 24 species of woody legumes endemic to
the fynbos region of South Africa.
Most of the species have very limited distribution ranges and special
habitat preferences. Some are restricted to mountain peaks (Cyclopia
burtonii, Cyclopia glabra, Cyclopia aurescens, Cyclopia bolusii, Cyclopia
alpina), others to perennial streams (Cyclopia maculata, Cyclopia
longifolia) or to marshy areas (Cyclopia pubescens),
shalebands (Cyclopia plicata, Cyclopia alopecuroides)
and wet southern slopes (Cyclopia bowieana, Cyclopia squamosa).
Over the years only Cyclopia intermedia ("bergtee") and
Cyclopia subternata ("vleitee") have found limited
commercial application, but it is known that the Cyclopia maculata,
Cyclopia genistoides and Cyclopia sessiliflora ("Heidelbergtee")
species have been used for home consumption. These species, including Cyclopia
meyeriana, Cyclopia pubescens, Cyclopia dregeana and Cyclopia
buxifolia, are currently being evaluated for future
commercialization.
The honeybush tea plant is easily recognized by its trifoliolate
leaves, single-flowered inflorescences and sweetly scented, bright
yellow flowers with prominent grooves on the standard petal, a thrust-in
(intrusive) calyx base and two bracts fused at the base around the
pedicel. The name Cyclopia is derived from the Greek words cyclos,
a circle and pous, a food, which allude to the intrusive base of
the calyx.
Honeybush tea plants have woody stems, a relatively low ratio of
leaves to stems and hard-shelled seeds that germinate poorly if not
scarified prior to germination. Leaf shape and size differ within the
species, but are mostly thin, needle-like to elongated, broadish leaves.
During the flowering period the bushes are easily recognized in the
field as they are covered with distinctive, deep-yellow flowers, which
have a characteristic sweet honey scent, from which the tea acquires its
name. According to traditional methods the tea is harvested during the
flowering period. Cyclopia intermedia and Cyclopia subternata
flower in September/October while Cyclopia sessiliflora flowers
in May/June.
Presently there are no honeybush plantings and the tea is
harvested from natural populations only.
Commercialization of honeybush tea cultivation should lead to planned
harvesting and more homogeneous material of predictable quality. The
largest export customers of rooibos, and possible future customers of
honeybush tea are Japan, Germany and Switzerland, where health drinks
are particularly sought after. One of the major problems associated with
the development of a reliable market is the lack of a standardized
processing method. The growing export figures and an increase in local
consumption has sparked off a widespread interest in the commercial
growing and processing of honeybush tea (33, 34,35,36,37,38,39,40).
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The manufacture of honeybush tea consists of four characteristic
processing steps, harvesting, cutting, "fermentation"
(oxidation) and drying.
Harvesting of honeybush tea was traditionally done during the
flowering period, but with the increasing demand, some of the major
producers were forced to extend the harvesting period to late summer.
The gathering of material from natural field populations often takes
days, since plants are harvested in the more mountainous regions of the
production area, these areas are often inaccessible to normal transport.
Different harvesting practices are used:
- harvesting of only the young growth
- cutting of the bush as low as possible from the ground with a
sickle or pruning-shears, or
- cutting it approximately 0.33 m from the ground.
In the case of Cyclopia intermedia, a resprouter, cutting of
bushes to the ground facilitates future harvesting as it reduces the
occurrence of stems that die after harvesting. Bushes previously
harvested give better material for processing as the stems are softer
and have higher leaf to stem ratios. Older bushes that are not regularly
harvested give too much coarse material due to thicker stems. Bushes in
a specific area are harvested every two to three years. After a fire the
bushes of Cyclopia intermedia show more growth, have more flowers and
often reach one to one and half meters in height giving good material
for the making of tea.
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The common method is cutting of the material before
"fermentation" or curing. This ensures the disruption of
cellular integrity and facilitates fermentation. Leaves that are not
adequately cut often retain an unacceptable green to light brown colour.
Mechanized fodder cutters are used to increase productivity and to
deliver a more uniform product. Processed material therefore varies
between 6 mm and 3 cm length. The effectiveness of commination depends
on the tea manufacturer’s equipment since customized cutters have been
developed.
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There are currently two distinct methods used for honeybush tea
fermentation, fermentation in a curing heap and fermentation at elevated
temperatures in a preheated "baking-oven".
- Heap fermentation
The common method of honeybush tea fermentation is the use of curing
heap, especially when large quantities of tea are produced. A round oval
shaped heap of approximately four to five meters in diameter and two
meters high requires 1.5 – 2.5 ton of green honeybush material. The
heap is packed firmly, covered with canvas or Hessian bags and left for
three days to allow spontaneous heat generation and fermentation.
Temperature build-up is quick since the heap is already warm when the
final material is packed into heap.
During the fermentation period, the material changes from green to
dark-brown and develops a sweet aroma. From the third day onwards the
heap is turned every twelve hours to ensure that outer, cooler regions,
are mixed with the rest of the material and to prevent oxygen deletion
in the heap. The heap is therefore inspected after three to five days of
fermentation, depending on the species used. If a sweet, honey-like
aroma is present and the material has a dark-brown colour, the heap is
spread open in a thin layer on canvas and allowed to dry in the sun.
- Oven fermentation
The use of a preheated oven gives a product of better and more
consistent quality since better control over the temperature of the
fermentation process is possible and shorter fermentation periods (24-36
h) are needed to obtain fully fermented tea, either to inhibit mould
growth.
The material after being cut, was placed in Hessian bags and scalded
with hot water to increase the temperature of the material before
fermentation. Fires were made in the drums and after the coals were
removed; the Hessian bags were placed in the drums and the openings
covered. The initial temperature was high (>90 Degree) during the
first few hours, but rapidly declined. Temperatures reaching 60 Degree
in the inner core of fermentation heaps have been observed. The
"baking-oven" allows reheating of 11 bags (ca. 35 kg each) of
honeybush tea during the fermentation process without having to remove
the material. At the turn of the century, "baking-ovens" were
already in use for the manufacturing of honeybush tea. Cyclopia
intermedia and Cyclopia subternata are fermented in a
"baking-oven".
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It is believed that the final product’s appearance is improved by
sun drying. The tea normally takes one to two days to dry, but this
depends on the thickness of the layer as well as the prevailing weather
conditions.
Honeybush tea is traditionally a very coarse product, which
contributes to the belief that the unrefined product has certain health
giving properties. The tea is therefore often sold as a mixture of short
stems and leaves. The final product is put through an electrically
driven, cylindrical sieve that has a 6.5 mm aperture screen, to remove
all the pieces thicker than a matchstick. Sieved honeybush tea is
generally bulk packed in large, woven plastic bags for local and
overseas markets, but small portion is also packed in small plastic bags
for sales.
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Honeybush tea is a herbal infusion and many health properties are
associated with the regular consumption of the tea. It has very low
tannin content and contains no caffeine. It is therefore especially
valuable for children and patients with digestive and heart problems
where stimulants and tannins should be avoided.
Nutritional Information
|
Nutrients
|
Function in Body
|
Per 240 ml
mg
|
|
Iron (Fe)
|
Essential for transport of oxygen in the blood
|
0,3 mg
|
|
Potassium (K)
|
Necessary for metabolic processes
|
0,01 mg
|
|
Calcium (Ca)
|
Necessary for strong teeth and bones
|
0,01 mg
|
|
Copper (Cu)
|
Necessary for different metabolic processes
|
0,003 mg
|
|
Zinc (Zn)
|
Necessary for normal growth and development and health skin
|
0,015 mg
|
|
Magnesium (Mg)
|
Necessary for healthy nervous system and for other metabolic
processes
|
0,002 mg
|
|
Manganese (Mn)
|
Necessary for metabolic processes and for bone growth and
development
|
0,11 mg
|
|
Sodium (Na)
|
Necessary for fluid and acid-base balance
|
1,5 mg
|
Research by the Department of Chemistry of the University of the
Orange Free State indicated those substantial amounts of (+)-pinitol is
present in Honeybush tea. Pinitol is used as an expectorant (42) and
also has anti-diabetic activity (43).
Honeybush tea processes numerous properties that enhance the health
of people that use it:
Isoflavones & Coumestans
The dietary phyto-estrogen-hormone-dependant process. This is
advantageous for:
- Regulation of menstruation cycles
- Prevention of breast, prostate and Uterus cancer
- Reduces the risk of Oesteoporosis
- Anti-fungal properties
- Anti-virus properties
- Anticholesterolemic-lowers cholesterol levels
- Hypolipemic-lowers fat levels
- Anti-microbial
- Anti-oxidant
Specific Luteolin is anti-spasmodic and anti-oxidant.
4-Hydroxycinnomic acid is anti-fungus and Antihepatotoxic.
Xanthones
- Anti-inflammatory
- Anti-hepatotoxic – works against kidney poisoning
- Anti-virus
- Anti-diarrhea
- Anti-fungus
- Anti-oxidants
- Anti-depressant
Flavones
- Vitamin-type activity (mixture of eriodictyol and hesperidien)
- Anti-oxidants
- Anti-microbial
- Anti-virus
- Anti-inflammatory
- Spasmolytic
- Diuretic (increases Urinating)
- Non-feeding sweeteners
Research on Honeybush tea has only started recently in the 90’s and
already great progress was made on testing and researching the medicinal
values of this tea. De Nysschen et al found 1995 three major phenolic
compounds in honeybush tealeaves: a xanthone c-glycoside, mangiferin and
O-glycosides of hesperitin and isosakuranetin, two flavanones (39).
Honeybush tea is normally consumed with milk and sugar, but to
appreciate the delicate sweet taste and flavour, no milk or sugar should
be added. Descriptions of the flavour vary from that of hot apricot jam,
floral, honey-like and dried fruit mix with the overall impression of
sweetness. The tea has the added advantage that the cold infusion can
also be used as iced tea and that it blends well with fruit juices.
Honeybush tea is prepared by boiling about 4-6 g of the dried material
(approximately 2-3 tablespoonfuls) per liter for 20 minutes.
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