title: Very stable enzymes from extremely thermophilic archaebacteria and eubacteria

authors: Bragger, J.M.

subjects: biology

abstract: Thirty-six thermophilic archaebacteria and nine extremely thermophilic eubacteria have been screened on solid media for extracellular amylase, protease, hemicellulase (xylanase), cellulase, pectinase and lipase activities. Extracellular enzymes were detected in 14 archaebacteria belonging to three different orders. Twelve of these were able to degrade starch and casein and the two Thermofilum strains were able to degrade starch, xylan and carboxymethylcellulose. Three of the eubacteria could degrade only starch. The other six (including four Thermotoga strains) all had activity against starch, xylan and carboxymethylcellulose, and one also had activity against casein. Some of the amylolytic archaebacteria released α-glucosidase, β-glucosidase, amylase and transglucosylase activities into liquid media containing starch or maltose. Thermotoga strain FjSS3B.1 released amylase, xylanase, cellulase and β -glucosidase activities into the medium when grown in the presence of substrates. When the partially purified enzymes from Thermotoga and some of the archaebacteria were compared with known thermostable enzymes the majority were found to be the most thermostable of their type. The β-glucosidase, xylanase and cellulase from Thermotoga and two  -glucosidases, a β-glucosidase, an amylase and a pullulanase from archaebacteria all have half-lives of at least 15 min at 105°C.

text: Very stable enzymes from extremely thermophilic archaebacteria and eubacteria Thirty-six thermophilic archaebacteria and nine extremely thermophilic eubacteria have been screened on solid media for extracellular amylase, protease, hemicellulase (xylanase), cellulase, pectinase and lipase activities. Extracellular enzymes were detected in 14 archaebacteria belonging to three different orders. Twelve of these were able to degrade starch and casein and the two Thermofilum strains were able to degrade starch, xylan and carboxymethylcellulose. Three of the eubacteria could degrade only starch. The other six (including four Thermotoga strains) all had activity against starch, xylan and carboxymethylcellulose, and one also had activity against casein. Some of the amylolytic archaebacteria released α-glucosidase, β-glucosidase, amylase and transglucosylase activities into liquid media containing starch or maltose. Thermotoga strain FjSS3B.1 released amylase, xylanase, cellulase and β -glucosidase activities into the medium when grown in the presence of substrates. When the partially purified enzymes from Thermotoga and some of the archaebacteria were compared with known thermostable enzymes the majority were found to be the most thermostable of their type. The β-glucosidase, xylanase and cellulase from Thermotoga and two  -glucosidases, a β-glucosidase, an amylase and a pullulanase from archaebacteria all have half-lives of at least 15 min at 105°C.

year: 1989

title: The Role of Medicinal Plants in New Zealand's Settler Medical Culture, 1850s-1920s

authors: Bishop, Joanna Lisa

subjects: Medicinal plants, medical history, settler culture

abstract: Throughout history, medicinal plants have been important components of medical practices in almost all cultures of the world. This thesis focuses specifically on the changing uses and understandings of medicinal plants in New Zealand‘s settler medical culture from 1850 to 1920. Using a wide range of source material, and both qualitative and quantitative methodologies, it examines the plant species most popular in New Zealand, the reasons for their popularity, the introduction of these into the Colony, and their use and interpretation by three groups of healers: domestic healers, herbalists and doctors.
This thesis deploys the concept of translation to argue that different qualities were attributed to the same plant in response to the needs and approaches of domestic healers, herbalists and doctors, each of whom had different ways of gathering, collating and assessing medico-botanical information. While British understandings of botany and medicine introduced during the course of colonisation guided healers and their use of plants in New Zealand significantly, this thesis posits that the flow of medico-botanical knowledge was more diffuse and highly complex, moving in multiple directions, and adapting and incorporating multiple meanings

text: The Role of Medicinal Plants in New Zealand's Settler Medical Culture, 1850s-1920s Throughout history, medicinal plants have been important components of medical practices in almost all cultures of the world. This thesis focuses specifically on the changing uses and understandings of medicinal plants in New Zealand‘s settler medical culture from 1850 to 1920. Using a wide range of source material, and both qualitative and quantitative methodologies, it examines the plant species most popular in New Zealand, the reasons for their popularity, the introduction of these into the Colony, and their use and interpretation by three groups of healers: domestic healers, herbalists and doctors.
This thesis deploys the concept of translation to argue that different qualities were attributed to the same plant in response to the needs and approaches of domestic healers, herbalists and doctors, each of whom had different ways of gathering, collating and assessing medico-botanical information. While British understandings of botany and medicine introduced during the course of colonisation guided healers and their use of plants in New Zealand significantly, this thesis posits that the flow of medico-botanical knowledge was more diffuse and highly complex, moving in multiple directions, and adapting and incorporating multiple meanings

year: 2014

title: Taku Rāta Tūtahi (composed 28 Oct 2013)

authors: Maxwell, Te Kahautu

abstract: Taku Rāta Tūtahi is a lament dedicated to my daughter Kaaterina Ataria Ariha Maxwell who passed away suddenly on the 23 March 2013. This composition talks about the pain of a father for his daughter and how at times life is unbearable because of this undiscribable pain. This composition was performed by Ōpōtiki Mai Tawhiti Kapa Haka at the Mātaatua Kapa Haka Regional Competition. This composition placed 2nd in the Whakaeke discipline.

text: Taku Rāta Tūtahi (composed 28 Oct 2013) Taku Rāta Tūtahi is a lament dedicated to my daughter Kaaterina Ataria Ariha Maxwell who passed away suddenly on the 23 March 2013. This composition talks about the pain of a father for his daughter and how at times life is unbearable because of this undiscribable pain. This composition was performed by Ōpōtiki Mai Tawhiti Kapa Haka at the Mātaatua Kapa Haka Regional Competition. This composition placed 2nd in the Whakaeke discipline.

year: 2014