Effect of harvest date on growth, production and quality of honeybush (Cyclopia genistoides and C. subternata)

North, M.S.; Joubert, Elizabeth; Beer, Dalene de; Kock, K. de; Joubert, M. E.

doi:10.1016/j.sajb.2016.08.002

Cited by 11 publications

(4 citation statements)

References 12 publications

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“…Awoniyi et al in the same vein, reported that the SS content of 2% fermented rooibos used in their study was 5±1.2mg/mL. 28 The SS content of honeybush differed from the report of North et al 63 The difference in the SS content of honeybush, and the TPC of rooibos, honeybush and Sutherlandia may in part be due to the difference in harvest times, production process and the part of the plant material used, amongst others.…”

Section: Discussionmentioning

confidence: 81%

The Effect of Rooibos (Aspalathus linearis), Honeybush (Cyclopia intermedia) and Sutherlandia (Lessertia frutescens) on Testicular Insulin Signalling in Streptozotocin-Induced Diabetes in Wistar Rats

Omolaoye¹,

Windvogel²,

Plessis³

2021

DMSO

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Background: Testicular insulin signalling is altered in diabetic (DM) males. While unravelling the mechanism through which DM exert these detrimental effects, studies have shown the importance of insulin regulation in glucose homeostasis, and how a lack in insulin secretion indirectly led to reduced male fertility. The current study aimed to investigate the role of rooibos, honeybush and Sutherlandia on insulin signalling in the testicular tissue of type I diabetic rats. Methods: Animals (n=60) were randomly divided into six groups. The groups include a control group, a vehicle group, and diabetes was induced in the remainder of animals via a single intraperitoneal injection of STZ at 45mg/kg. The remaining four groups included a diabetic control (DC), diabetic + rooibos (DRF), diabetic + honeybush (DHB) and diabetic + Sutherlandia group (DSL). Animals were sacrificed after seven weeks of treatment, and blood and testes were collected. Results: All diabetic groups (DC, DRF, DHB, DSL) presented with a significant increase in blood glucose levels after diabetes induction compared to the control and vehicle (p<0.001). The DC animals presented with decreased testicular protein expression of IRS-1, PkB/Akt and GLUT4 compared to controls. DRF and DHB animals displayed an acute upregulation in IRS-1, while the DSL group showed improvement in IRS-2 compared to DC. Although, DRF animals presented with a decrease in PkB/Akt, DHB and DSL animals displayed upregulation (22.3%, 48%) compared to controls, respectively. Conclusion: The results taken together, it can be suggested that these infusions may enhance insulin signalling through diverse pathways.

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Section: Discussionmentioning

confidence: 81%

The Effect of Rooibos (Aspalathus linearis), Honeybush (Cyclopia intermedia) and Sutherlandia (Lessertia frutescens) on Testicular Insulin Signalling in Streptozotocin-Induced Diabetes in Wistar Rats

Omolaoye¹,

Windvogel²,

Plessis³

2021

DMSO

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“…(2017), cutting mature C. genistoides back in February produced significantly higher fresh mass per bush (0.81 kg per plant) than harvesting during September, May, or August. Following harvesting, a 12‐mo regrowth period was recommended (North et al., 2017).…”

Section: Harvesting Practicesmentioning

confidence: 99%

“…Based on these results, North et al. (2017) recommended that cultivated C. genistoides and C. subternata should preferably be harvested in February and August, respectively. However, in practice, commercial harvesting is generally conducted throughout the year regardless of season, since honeybush as a crop most often provides supplementary income to producers and therefore, harvesting is scheduled to fall within a time of lower activity and greater availability of labor (Joubert et al., 2011).…”

Section: Harvesting Practicesmentioning

confidence: 99%

“…To date, honeybush has been predominantly harvested from the wild (Mabizela et al., 2016; McGregor, 2017a; North et al., 2017) with only an estimated 20% of commercially traded honeybush being produced under cultivation (McGregor, 2017b). It is difficult to estimate the total amount tea plant material produced annually as the percentage of tea sold on the local market is unrecorded.…”

Section: Introductionmentioning

confidence: 99%

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Propagation and cultivation practices of honeybush (Cyclopia spp.) for the sustainable production of an export quality indigenous South African tea

et al. 2022

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Honeybush (Cyclopia) species are endemic to the Fynbos Biome of the Cape Floral Kingdom in South Africa. Traditionally, honeybush foliage is cut, fermented, and sun-dried to make an antioxidant-rich herbal tea. Approximately 80% of honeybush is unsustainably harvested from the wild. All commercial species are indicated on the International Union for Conservation of Nature Red List of Threatened Species. Cultivation is thus required to ensure sufficient volumes of tea are produced. A major limitation to cultivation is the poor rooting responses of the species that regenerate from shoots, C. genistoides and C. intermedia, the latter being the most harvested from the wild. The establishment of clonally propagated material is a challenge for all six of the commercially important Cyclopia species. Research on honeybush has mainly focused on the unique properties contributing to flavor, medicinal value, as well as processing. Much less is known about propagation, nutrient requirements, harvesting procedures, plant improvement, and pest and disease management. This review considers management strategies for the sustainable harvesting of wild honeybush and the potential risks of introducing improved plant material. Cultivation practices and management strategies that promote longevity and enhance yield are defined. The inherent rooting ability of cuttings is discussed. Cultivated stands are mostly established by seedlings which results in diversity of vigor and tea quality. A sustainable market based on high-quality indigenous tea requires the use of clonal material which allows the selection of desired traits and rapid multiplication. Its use would enable improved yield and profitability without compromising tea quality.

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Phenolic Composition of Honeybush and Changes During Herbal Tea and Extract Production

Beer

Human

Joubert

2023

Reference Series in Phytochemistry

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Effect of harvest date on growth, production and quality of honeybush (Cyclopia genistoides and C. subternata)

Cited by 11 publications

References 12 publications

The Effect of Rooibos (Aspalathus linearis), Honeybush (Cyclopia intermedia) and Sutherlandia (Lessertia frutescens) on Testicular Insulin Signalling in Streptozotocin-Induced Diabetes in Wistar Rats

The Effect of Rooibos (Aspalathus linearis), Honeybush (Cyclopia intermedia) and Sutherlandia (Lessertia frutescens) on Testicular Insulin Signalling in Streptozotocin-Induced Diabetes in Wistar Rats

Propagation and cultivation practices of honeybush (Cyclopia spp.) for the sustainable production of an export quality indigenous South African tea

Phenolic Composition of Honeybush and Changes During Herbal Tea and Extract Production

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