title: The factors responsible for the varying levels of UMF® in mānuka (Leptospermum scoparium) honey

authors: Stephens, Jonathan McDonald Counsell

subjects: Leptospermum scoparium

abstract: The variability in the level of the non-peroxide antibacterial component (UMF®) of mānuka honey produced in New Zealand was studied. A field analysis confirmed considerable variability existed in the honeys, and a number of hypotheses to explain this variability were proposed and examined.

Nectar derived from Leptospermum scoparium (mānuka), was confirmed to be the
source of UMF®.

The dilution of mānuka honey with nectar derived from other floral sources was found to proportionally reduce the UMF® in monofloral mānuka honey. The utilisation of the thixotropic properties of mānuka honey allowed the degree of dilution in the field samples to be established, and an adjustment of the field results to account for the dilution of UMF® by other honey types revealed all monofloral mānuka honey contains UMF®. However, in the monofloral mānuka honey, significantly different levels of UMF® activity were found to come from reasonably well-defined geographic regions.

The cause of the variable levels of UMF® activity in mānuka honey would appear to be the different varieties of L. scoparium being harvested by the honeybees, and the environmental parameters influencing nectar production or another species interacting with L. scoparium do not appear to influence UMF® activity.

Three methods were used to establish genetic variability within regions of the North Island of New Zealand that gave rise to the various levels of UMF® activity. Analyses of morphological characteristics, chemotaxonomic essential oil profiles, and population genetics of L. scoparium populations were conducted, and the conclusions that were drawn from each of these were very similar. Two major divisions were identified, each divided into two varieties. The northern division, which contained the core populations from Northland and Waikato, represented the previously described L. scoparium var. incanum and L. scoparium var. linifolium. This division yielded mānuka honey with high UMF® activity. The southern division, which contained the core populations from the Central North Island and East Coast, represented the previously described L. scoparium var. myrtifolium and an unnamed variety. The latter, growing principally on the East Coast, uniquely contains triketones essential oils. The southern division yielded mānuka honey with low UMF® activity. Hybridisation between these varieties will occur, leading to a continuum of UMF® activity in mānuka honey.

The data indicated multiple dispersions of L. scoparium to New Zealand from the evolutionary centre of the persistent-capsule Leptospermum group in south-east Australia, and later regional dispersal in New Zealand.

From this study two hypotheses were accepted: the variability in the UMF® activity of mānuka honey is due to both the dilution of mānuka honey by other honey types and the variety of L. scoparium harvested.

text: The factors responsible for the varying levels of UMF® in mānuka (Leptospermum scoparium) honey The variability in the level of the non-peroxide antibacterial component (UMF®) of mānuka honey produced in New Zealand was studied. A field analysis confirmed considerable variability existed in the honeys, and a number of hypotheses to explain this variability were proposed and examined.

Nectar derived from Leptospermum scoparium (mānuka), was confirmed to be the
source of UMF®.

The dilution of mānuka honey with nectar derived from other floral sources was found to proportionally reduce the UMF® in monofloral mānuka honey. The utilisation of the thixotropic properties of mānuka honey allowed the degree of dilution in the field samples to be established, and an adjustment of the field results to account for the dilution of UMF® by other honey types revealed all monofloral mānuka honey contains UMF®. However, in the monofloral mānuka honey, significantly different levels of UMF® activity were found to come from reasonably well-defined geographic regions.

The cause of the variable levels of UMF® activity in mānuka honey would appear to be the different varieties of L. scoparium being harvested by the honeybees, and the environmental parameters influencing nectar production or another species interacting with L. scoparium do not appear to influence UMF® activity.

Three methods were used to establish genetic variability within regions of the North Island of New Zealand that gave rise to the various levels of UMF® activity. Analyses of morphological characteristics, chemotaxonomic essential oil profiles, and population genetics of L. scoparium populations were conducted, and the conclusions that were drawn from each of these were very similar. Two major divisions were identified, each divided into two varieties. The northern division, which contained the core populations from Northland and Waikato, represented the previously described L. scoparium var. incanum and L. scoparium var. linifolium. This division yielded mānuka honey with high UMF® activity. The southern division, which contained the core populations from the Central North Island and East Coast, represented the previously described L. scoparium var. myrtifolium and an unnamed variety. The latter, growing principally on the East Coast, uniquely contains triketones essential oils. The southern division yielded mānuka honey with low UMF® activity. Hybridisation between these varieties will occur, leading to a continuum of UMF® activity in mānuka honey.

The data indicated multiple dispersions of L. scoparium to New Zealand from the evolutionary centre of the persistent-capsule Leptospermum group in south-east Australia, and later regional dispersal in New Zealand.

From this study two hypotheses were accepted: the variability in the UMF® activity of mānuka honey is due to both the dilution of mānuka honey by other honey types and the variety of L. scoparium harvested.

year: 2006

title: Life, the crocodile, the Pisikoa and the wind: representations of teaching in the writings of three pacific authors.

authors: Devine, Nesta

subjects: Pacific literature

abstract: In the course of research involving the experiences of teachers of Pacific ancestry in New Zealand public schools, I became interested in the ways in which teachers were represented in Pacific thinking. Published works give relatively easy access to at least some of the patterns of thought evoked by the term teacher. In this paper I shall look at the kinds of teacher and teaching shown by Ruparuke Petaia, Albert Wendt and Sia Figiel. These authors, all confidently Samoan, portray some of the complexities of learning and teaching from within Samoan sensibilities. ÂLife", "the Crocodile", "the Pisikoa" and "the Wind" are all the names of teachers in this literature. My discussion of Kidnapped by Petaia (1974), Ola by Wendt (1991) and Where we once belonged by Figiel (1996) is not chronologically ordered so much as thematically arranged. The three themes are: decolonisation of education, the European teacher of Pasifika students and the Samoan teacher of Samoan students. Petaia presents a decolonising stance: the teacher as instrument of colonisation or enslavement. This perception is followed through by a discussion of Figiel's character, Siniva, who likewise rejects European knowledge as a form of darkness, and a brief reference to this idea by Wendt. Both Wendt and Figiel portray European teachers as arrogant in their assumptions about the universal nature of their knowledge, and as comic figures of enlightenment colonisation, somehow cut off from embodied human experience. Wendt sees the Samoan teacher as ineffectual, an instrument of a kind of hopeless enlightenment, frustrated by regulations and village traditions, while Fig iel sees her as a real presence in village life but a tragic figure of local ignorance.

text: Life, the crocodile, the Pisikoa and the wind: representations of teaching in the writings of three pacific authors. In the course of research involving the experiences of teachers of Pacific ancestry in New Zealand public schools, I became interested in the ways in which teachers were represented in Pacific thinking. Published works give relatively easy access to at least some of the patterns of thought evoked by the term teacher. In this paper I shall look at the kinds of teacher and teaching shown by Ruparuke Petaia, Albert Wendt and Sia Figiel. These authors, all confidently Samoan, portray some of the complexities of learning and teaching from within Samoan sensibilities. ÂLife", "the Crocodile", "the Pisikoa" and "the Wind" are all the names of teachers in this literature. My discussion of Kidnapped by Petaia (1974), Ola by Wendt (1991) and Where we once belonged by Figiel (1996) is not chronologically ordered so much as thematically arranged. The three themes are: decolonisation of education, the European teacher of Pasifika students and the Samoan teacher of Samoan students. Petaia presents a decolonising stance: the teacher as instrument of colonisation or enslavement. This perception is followed through by a discussion of Figiel's character, Siniva, who likewise rejects European knowledge as a form of darkness, and a brief reference to this idea by Wendt. Both Wendt and Figiel portray European teachers as arrogant in their assumptions about the universal nature of their knowledge, and as comic figures of enlightenment colonisation, somehow cut off from embodied human experience. Wendt sees the Samoan teacher as ineffectual, an instrument of a kind of hopeless enlightenment, frustrated by regulations and village traditions, while Fig iel sees her as a real presence in village life but a tragic figure of local ignorance.

year: 2006

title: Chief Justice James Prendergast and the administration of New Zealand colonial justice, 1862-1899

authors: Morris, Grant Hamilton

abstract: The New Zealand legal system during the nineteenth-century was in a state of rapid change and constant turmoil. After the signing of the Treaty of Waitangi between Maori and the British Crown in 1840, British immigration to New Zealand began in earnest. As a British colony, New Zealand gradually acquired the British legal system and adapted it to suit the colonial environment. These adaptations resulted in conflict with Maori and eventually the supremacy of British law in New Zealand. 

This thesis explores the role of James Prendergast in helping to create the colonial New Zealand legal system. Prendergast served as Attorney-General of New Zealand from 1865 to 1875 and Chief Justice of New Zealand from 1875 to 1899. Firstly, the English background of Prendergast is analysed and provided as a context for his actions in New Zealand. Then, Prendergast’s rise to power in New Zealand is explored, focusing primarily on his roles as Attorney-General and Chief Justice. Particular attention is paid to Prendergast’s relationship with Maori, his enduring legacy in New Zealand statute and case law and the relationship between English law and the colonial New Zealand legal system. The recent vilification of Prendergast by modern scholars is detailed, especially in relation to Prendergast’s decision in the case, Wi Parata v Bishop of Wellington (1877). Finally, an assessment is made of Prendergast’s life, legacy and influence in New Zealand legal history. 

Several important conclusions are reached through the study of the life of James Prendergast. Through his words, actions and judgments, Prendergast played a highly influential role in the development of the New Zealand legal system. Prendergast is more than just the two-dimensional figure that he has become in modern scholarship. Many of Prendergast’s actions that were considered successful by contemporary colonial society are also the actions for which Prendergast is now criticised by modern New Zealand society. A clash has occurred between the standards of the past and the views of the present. 

This thesis also proffers the argument that the English legal system was of overwhelming importance in the development of the New Zealand legal system and the administration of colonial justice. The central problem in adapting the English system to the New Zealand environment was the inflexibility of the law in the face of indigenous people’s rights. Prendergast was a product of Victorian England and failed to come to terms with Maori society. While he was a competent judge who left a legacy of common law precedent, Prendergast’s main success was as an administrator and leader of the colonial legal environment. While the Wi Parata decision of 1877 was legally dubious, it is misleading to judge Prendergast's career solely by this one decision. 

James Prendergast is a pivotal figure in the study of nineteenth-century New Zealand legal history. He has left a legacy of legal precedent and jurisprudential controversy. This judicial biography provides an account of his successes and failures throughout his long and eventful life.

text: Chief Justice James Prendergast and the administration of New Zealand colonial justice, 1862-1899 The New Zealand legal system during the nineteenth-century was in a state of rapid change and constant turmoil. After the signing of the Treaty of Waitangi between Maori and the British Crown in 1840, British immigration to New Zealand began in earnest. As a British colony, New Zealand gradually acquired the British legal system and adapted it to suit the colonial environment. These adaptations resulted in conflict with Maori and eventually the supremacy of British law in New Zealand. 

This thesis explores the role of James Prendergast in helping to create the colonial New Zealand legal system. Prendergast served as Attorney-General of New Zealand from 1865 to 1875 and Chief Justice of New Zealand from 1875 to 1899. Firstly, the English background of Prendergast is analysed and provided as a context for his actions in New Zealand. Then, Prendergast’s rise to power in New Zealand is explored, focusing primarily on his roles as Attorney-General and Chief Justice. Particular attention is paid to Prendergast’s relationship with Maori, his enduring legacy in New Zealand statute and case law and the relationship between English law and the colonial New Zealand legal system. The recent vilification of Prendergast by modern scholars is detailed, especially in relation to Prendergast’s decision in the case, Wi Parata v Bishop of Wellington (1877). Finally, an assessment is made of Prendergast’s life, legacy and influence in New Zealand legal history. 

Several important conclusions are reached through the study of the life of James Prendergast. Through his words, actions and judgments, Prendergast played a highly influential role in the development of the New Zealand legal system. Prendergast is more than just the two-dimensional figure that he has become in modern scholarship. Many of Prendergast’s actions that were considered successful by contemporary colonial society are also the actions for which Prendergast is now criticised by modern New Zealand society. A clash has occurred between the standards of the past and the views of the present. 

This thesis also proffers the argument that the English legal system was of overwhelming importance in the development of the New Zealand legal system and the administration of colonial justice. The central problem in adapting the English system to the New Zealand environment was the inflexibility of the law in the face of indigenous people’s rights. Prendergast was a product of Victorian England and failed to come to terms with Maori society. While he was a competent judge who left a legacy of common law precedent, Prendergast’s main success was as an administrator and leader of the colonial legal environment. While the Wi Parata decision of 1877 was legally dubious, it is misleading to judge Prendergast's career solely by this one decision. 

James Prendergast is a pivotal figure in the study of nineteenth-century New Zealand legal history. He has left a legacy of legal precedent and jurisprudential controversy. This judicial biography provides an account of his successes and failures throughout his long and eventful life.

year: 2001