21 results on '"SPRAY drying"'
Search Results
2. Microencapsulation of Rhizobium leguminosarum bv. trifolii with guar gum: Preliminary approach using spray drying.
- Author
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Baena-Aristizábal, Claudia M., Foxwell, Marie, Wright, David, and Villamizar-Rivero, Laura
- Subjects
- *
MICROENCAPSULATION , *GUAR gum , *RHIZOBIUM leguminosarum , *SPRAY drying , *DIATOMACEOUS earth , *THERMAL stresses - Abstract
• R. leguminosarum bv. trifolii strain TA1 is used for inoculation in New Zealand, but the previously used strain CC275e is more thermotolerant. • Cells of both CC275e and TA1 cultured in peat were more stable than those grown in diatomaceous earth Celite® when exposed to thermal stress. • CC275e was microencapsulated by spray drying using peat growth substrate (carrier) and guar gum (coating material) to produce microparticles. • The final loading of dry microparticles was determined by the combination of process temperature, amount of peat and concentration of polymer. Rhizobium leguminosarum bv trifolii strains TA1 and CC275e have been widely used as effective nitrogen fixing strains for white clover in New Zealand, but rhizobia survival on seeds is usually poor due to different stress conditions. The aim of this study was to select one of those commercial strains grown in a solid carrier (core) and study the influence of the core:polymer ratio in a microencapsulation process by spray drying using guar gum as coating material. First, strains TA1 and CC275e grown on peat and diatomaceous earth were exposed to temperature and desiccation stress. Both strains were stable at 40 °C and completely died after five minutes at 80 °C, while CC275e was more stable than TA1 at 60 °C. TA1 and CC275e slightly decreased viability after six hours drying with either carriers, with no differences between strains. A central composite design was used to develop the microencapsulation process. Independent variables were: inlet temperature (130 °C) and feed flow rate (5 mL/min). Microparticles presented rhizobia loading in 107 CFU/g and mean particle size between 10 and 30 μm. Optimized process reached 50% yield and 107 CFU/g loading. Rhizobia viability dropped two logarithmic units during the microencapsulation/drying process, possibly due to the negative effects of dehydration and high outlet temperature (≈70 °C), suggesting the need to continue optimizing the process by improving the thermal profile in the drying chamber. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
3. Valorization of tuberose flower waste through development of therapeutic products using supercritical carbon dioxide extraction and microencapsulation technologies.
- Author
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Ghosh, Probir Kumar, Tamili, Dipshikha, Das, Anamika, Datta, Sanjukta, Das, Satadal, Saha, Subhankar, Kuotsu, Ketousetuo, and Bhattacharjee, Paramita
- Subjects
SUPERCRITICAL carbon dioxide ,MICROENCAPSULATION ,SPRAY drying ,WOUND healing ,NEW product development ,FLOWERS - Abstract
Tuberose flowers (Calcutta Single variety) valued as ornamentals globally, have short shelf-lives of 8 days at 4 ± 1 °C and are therefore discarded post senescence. Previous investigations from our laboratory have established that a combination treatment using GRAS preservatives [(sucrose (4%) and CaCl
2 (0.02%)]-cum-gamma-irradiation (0.02 kGy) could extend its shelf-life to 24 days, when stored at 4 ± 1 °C with concomitant enhancement in the content of its bioactive principle, viz. methyl eugenol. Supercritical carbon dioxide (SC-CO2 ) extract of the tuberose flower wastes post combination treatment therefore had a higher methyl eugenol content (4.11 ± 0.05 µg/g), vis-à-vis its non-treated counterpart (2.03 ± 0.03 µg/g), and thus significantly higher antioxidant and antimicrobial potencies (MIC values of 1.83 ± 0.02 mg/ml and 1.98 ± 0.03 mg/ml against S. aureus ATCC 25923 strain and MDR strain, respectively). The microencapsulated powder of the extract (MEp ) obtained by spray drying was applied for healing of epidermal wounds created on New Zealand white rabbits, post skin irritancy test (wherein no clinical sign of toxicity, redness or swelling was observed). When MEp was applied, accelerated healing occurred which commenced on day 2 and was completed by day 6 vis-à-vis that of the control powder set (without extract) which showed no signs of wound healing. Therefore, the sensorially compromised-senesced tuberose flowers, a rich source of methyl eugenol, has been successfully valorized through utilization of the same in developing a novel topical antibiotic powder against potent skin pathogens. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
4. Bioactive Components and Anticancer Activities of Spray-Dried New Zealand Tamarillo Powder.
- Author
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Liu Q, Hamid N, Liu Y, Kam R, Kantono K, Wang K, and Lu J
- Subjects
- New Zealand, Powders chemistry, Spray Drying, Antioxidants chemistry, Antioxidants pharmacology, Desiccation methods
- Abstract
Tamarillo fruit contains many phytochemicals that have beneficial therapeutic and nutritional properties. Spray-drying is widely used to preserve fruit puree in powder form. However, to obtain high-quality fruit powder, the optimisation of spray-drying conditions is necessary, as a high drying temperature can damage sensitive bioactive compounds. This study investigated the effects of spray-drying on the microstructure, polyphenolics, total flavonoids, total carotenoids, antioxidant activity, and anticancer capacity of tamarillo powder. Response surface methodology (RSM) was used to optimise the spray-drying process to produce tamarillo powder. The independent variables were inlet drying temperature (120-160 °C), flow rate (1-5 g/mL), and maltodextrin concentration (0-10%). These variables influenced the microstructural attributes, bioactive components, and cytotoxicity of the spray-dried tamarillo powder. The increase in polyphenols and antioxidant activities were favoured under high-temperature spray drying conditions and a low carrier concentration. The optimised spray-drying conditions for producing tamarillo powder with high antioxidant and anticancer activities, high yield, and stable bioactive compounds were found to be at 146.8 °C inlet temperature, and a flow rate of 1.76 g/mL.
- Published
- 2022
- Full Text
- View/download PDF
5. Minimum Distribution Rates in Falling Film Evaporators
- Author
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Chemeca (2006 : Auckland, N.Z.), Morison, Ken R, and Holman, Michelle L
- Published
- 2006
6. Danone eyes "carbon neutrality" for NZ plant.
- Author
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Best, Dean
- Subjects
CARBON offsetting ,INFANT formulas ,SPRAY drying ,CARBON dioxide - Abstract
Danone has set out plans for one of its infant-formula plants to have a "net zero carbon footprint", a move the French dairy giant described as a "significant, industry-leading milestone". By 2021, Danone wants its spray-drying plant in New Zealand's South Island to achieve "carbon neutrality", the equivalent of zero net carbon dioxide emissions. At the plant, Danone plans to install a biomass boiler to reduce the facility's carbon dioxide emissions by 20,000 tonnes per year. [Extracted from the article]
- Published
- 2019
7. FIET - Food Industry Enabling Technologies.
- Author
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Archer, Richard
- Subjects
FOOD industry technology transfer ,RESEARCH & development ,FOOD industry ,FREEZE-drying ,SPRAY drying - Abstract
The article focuses on a objectives and structure of research programe Food Industry Enabling Technologies (FIET) which is a partnership of several institutional Research And Development (R&D) providers. Topics include adaptation of existing and new processing technologies for the growth of margins of food industries in New Zealand, technologies for meat and fish, food preservation through atmospheric freeze-drying, deactivation of enzymes and spray drying of fruit juices and honey.
- Published
- 2015
8. Creating an environment for innovation.
- Author
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Suisted, Narelle
- Subjects
SPRAY drying ,PARKS ,FOOD industry ,SMALL business ,EQUIPMENT & supplies - Abstract
The article reports on the installation of the first independent spray dryer in New Zealand at Waikato Innovation Park. The dryer produces powder from liquid or slurry and is expected to provide food industry members with access to a facility designed for developing new food products. The unveiling of the dryer is projected to herald innovation in the food sector of the country. The facility is also expected to offer small and medium-sized businesses the chance to test their new products.
- Published
- 2012
9. Australian nozzle sets world standard.
- Subjects
SPRAY drying ,FOOD industry equipment ,DAIRY machinery ,EQUIPMENT & supplies - Abstract
Reports that the patented "twist and dry" or TD Spray Nozzle system by Bete Fog Nozzle Co. was developed and trialled in Australia and New Zealand by Spray Nozzle Engineering. Claim by the company that the technology has now become a world standard for the spray drying of dairy products and nutritionals.
- Published
- 2003
10. Research dryer signs first client.
- Author
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Searle, Steve
- Subjects
CONTRACTS ,SPRAY drying ,AGRICULTURAL innovations - Abstract
The article reports on the first contract signed for the use of the 11 million dollar spray-dryer research facility at the Waikato Innovation Park in New Zealand. Innovation Waikato, the park's holding firm, has negotiated with investor Eden AgriCapital on the plan to generate 50 million dollars for the establishment of a national network of agricultural innovation parks in the country. The opinion of the park's chairperson Michael Spaans on the deal is also cited.
- Published
- 2011
11. Product environmental footprint of New Zealand leather production.
- Author
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Kılıç, Eylem, McLaren, Sarah J., Holmes, Geoff, Fullana-i-Palmer, Pere, and Puig, Rita
- Subjects
GREENHOUSE gases ,LEATHER ,SUSTAINABILITY ,PRODUCT life cycle assessment ,LEATHER industry ,CHROMIUM oxide - Abstract
Purpose: The leather industry is facing global challenges in terms of its sustainability profile and in providing transparency in its supply chain. In particular, provision of information on the environmental profile of leather production will likely become of increasing strategic and economic importance for leather manufacturers as the marketplace becomes more environmentally conscious. The objective of this research was to analyse the environmental impacts of the New Zealand tanning system, for the first time, and provide information to enable leather tanning company managers to calculate environmental performance indicators in order to support more sustainable production practices. Methods: A "gate-to-gate" life cycle assessment was performed for finished shoe leather, following the recently published leather Product Environmental Footprint Category Rules (PEFCR), using primary data collected from a New Zealand tannery. Results and discussion: The New Zealand tannery consumes 2.83 kg of chemicals, 126.17 l of water and 25.3 MJ energy and emits 8.54 kg CO
2 eq. throughout the production process to generate 1 m2 of finished shoe leather. Tanning, retanning and finishing are the most burdening phases across the different impact categories, mainly due to use of chemicals. For climate change, a majority of greenhouse gas emissions are associated with production of the chemicals (predominantly dyestuff, thermoplastic polyurethane and chromium oxide) used in these processes. Conclusions: The results of the study highlight the significant environmental impacts related to the production of chemical compounds used in the tannery, and improvements to the New Zealand system should therefore focus on reducing chemical use and optimising processes. Further studies that extend the analysis to include both livestock farming and slaughtering processes in New Zealand are recommended. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
12. Comparison of carbon footprint and water scarcity footprint of milk protein produced by cellular agriculture and the dairy industry.
- Author
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Behm, Katri, Nappa, Marja, Aro, Nina, Welman, Alan, Ledgard, Stewart, Suomalainen, Marjut, and Hill, Jeremy
- Subjects
ECOLOGICAL impact ,WATER shortages ,DAIRY industry ,LACTOGLOBULINS ,MILK proteins ,AGRICULTURAL industries ,ANIMAL waste - Abstract
Purpose: This paper studies the carbon footprint and water scarcity footprint (WSF) of a milk protein, beta-lactoglobulin, produced by cellular agriculture and compares this to extracted dairy protein from milk. The calculations of the microbially produced proteins were based on a model of a hypothetical industrial-scale facility. The purpose of the study is to examine the role relative to dairy of microbially produced milk proteins in meeting future demand for more sustainably produced protein of high nutritional quality. Methods: The evaluated process considers beta-lactoglobulin production in bioreactor cultivation with filamentous fungi T. reesei and downstream processing for product purification. The model considers four production scenarios in four different locations (New Zealand, Germany, US, and Australia) with a cradle-to-gate system boundary. The scenarios consider different sources of carbon (glucose and sucrose), different options for the fungal biomass treatment (waste or animal feed) and for the purification of the product. Allocation to biomass was avoided by considering it substituting the production of general protein feed. The carbon footprint and WSF (based on AWaRe factors) modelling is compared to calculations and actual data on extracted dairy protein production in NZ. The uncertainties of modelled process were addressed with a sensitivity analysis. Results and discussion: The carbon footprint of microbially produced protein varied depending on the location (energy profile) and source of carbon used. The lowest carbon footprint (5.5 t CO
2 e/t protein) was found with sucrose-based production in NZ and the highest (17.6 t CO2 e/t protein) in Australia with the glucose and chromatography step. The WSF results varied between 88–5030 m3 world eq./t protein, depending on the location, type of sugar and purification method used. The avoided feed production had a bigger impact on the WSF than on the carbon footprint. Both footprints were sensitive to process parameters of final titre and protein yield from sugar. The results for milk protein were of similar magnitude, c.10 t CO2 e/t protein and 290–11,300 m3 world eq./t protein. Conclusions: The environmental impacts of microbially produced milk protein were of the same magnitude as for extracted dairy protein. The main contributions were sugar and electricity production. The carbon footprints of proteins produced by cellular agriculture have potential for significant reduction when renewable energy and more sustainable carbon sources are used and combined with evolving knowledge and technology in microbial production. Similarly, the carbon footprint of milk proteins can potentially be reduced through methane reduction technologies. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF
13. Techno‐economic analysis of tannin and briquette co‐production from bark waste: a case study quantifying symbiosis benefits in biorefinery.
- Author
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Wijeyekoon, Suren, Suckling, Ian, Fahmy, Muthasim, Hall, Peter, and Bennett, Paul
- Subjects
TANNINS ,BRIQUETS ,MONTE Carlo method ,INTERNAL rate of return ,INDUSTRIAL ecology ,GEOTHERMAL resources ,SYMBIOSIS - Abstract
Incorporating industrial symbiosis benefits into biorefinery opportunities can reduce new investment costs and possibly improve the green credentials of processes. The existing wood‐processing cluster at Kawerau, New Zealand, with easy access to wood‐processing residues, excess on‐site geothermal energy, and on‐site use of products, could provide significant symbiotic benefits for the development of biorefinery opportunities. To quantify the potential benefits of this site symbiosis, we undertook a detailed techno‐economic and risk analysis for co‐production of bark briquettes and tannin adhesive from wood bark in greenfield and in Kawerau scenarios. Kawerau site benefits were quantified and their impacts on opportunity viability were assessed. Symbiotic use of the tannin adhesive produced on site and the use of the geothermal heat available in Kawerau reduced the utility cost by 45% and total capital investment by 56% compared with a greenfield operation. This improved the overall economics significantly, with the internal rate of return increasing from 6 to 22%. Monte Carlo simulations showed that the water : bark ratio and tannin yield have profound effects on process economics. Process improvements show a greater effect on improving the overall economics than price volatilities of input materials. The study findings confirm the significant economic benefits of incorporating industrial symbiosis at existing wood‐processing sites, and help to identify research needs for tannin process improvements. © 2021 Argonne National Laboratory. Biofuels, Bioproducts and Biorefining published by Society of Industrial Chemistry and John Wiley & Sons Ltd [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
14. Overview: Materials handling
- Published
- 2013
15. Branch Reports.
- Author
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Harrison, Paul, El Shall, Esraa, Harvey, Winna, van den Beuken, John, Main, Allan, Honore, Craig, Greig, Fiona, and Pitt, Colin
- Subjects
FOOD science ,FOOD industry ,SPECIAL events ,ASSOCIATIONS, institutions, etc. - Abstract
The article offers updates on the activities of the branches of New Zealand Institute of Food Science and Technology (NZFIST) in 2018. It mentions the social event and a Quiz Night hosted by the Auckland branch and the two educational monthly meetings hosted by the Canterbury branch in July and September. It adds that speaker Ann Hayman addressed the Central Branch members on food safety, nutrition and project management.
- Published
- 2018
16. The Fonterra Research Centre.
- Author
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Hill, Jeremy
- Subjects
DAIRY industry research - Abstract
Focuses on the Fonterra Research Centre (FRC) formerly known as the New Zealand Dairy Research Institute. History of FRC; Structure; Funding of FRC; Activities.
- Published
- 2003
- Full Text
- View/download PDF
17. Microencapsulated Pomegranate Modifies the Composition and Function of High-Density Lipoproteins (HDL) in New Zealand Rabbits.
- Author
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Dorantes-Morales, Alan, Estrada-Luna, Diego, Bautista-Pérez, Rocío, Betanzos-Cabrera, Gabriel, Luna-Luna, María, Flores-Castillo, Cristóbal, Vargas-Alarcón, Gilberto, Fragoso, José Manuel, Pérez-Méndez, Óscar, and Carreón-Torres, Elizabeth
- Subjects
LIPOPROTEINS ,POMEGRANATE ,HIGH density lipoproteins ,PHOSPHOLIPIDS ,RABBITS ,BLOOD cholesterol ,SPHINGOMYELIN - Abstract
Previous studies demonstrated that pomegranate, which is a source of several bioactive molecules, induces modifications of high-density lipoproteins (HDL) lipid composition and functionality. However, it remains unclear whether the beneficial effects of pomegranate are related to improvement in the lipid components of HDL. Therefore, in this placebo-controlled study, we characterized the size and lipid composition of HDL subclasses and assessed the functionality of these lipoproteins after 30 days of supplementation with a pomegranate microencapsulated (MiPo) in New Zealand white rabbits. We observed a significant decrease in plasma cholesterol, triglycerides, and non−HDL sphingomyelin, as well as increases in HDL cholesterol and HDL phospholipids after supplementation with MiPo. Concomitantly, the triglycerides of the five HDL subclasses isolated by electrophoresis significantly decreased, whereas phospholipids, cholesterol, and sphingomyelin of HDL subclasses, as well as the HDL size distribution remained unchanged. Of particular interest, the triglycerides content of HDL, estimated by the triglycerides-to-phospholipids ratio, decreased significantly after MiPo supplementation. The modification on the lipid content after the supplementation was associated with an increased resistance of HDL to oxidation as determined by the conjugated dienes formation catalyzed by Cu
2+ . Accordingly, paraoxonase-1 (PON1) activity determined with phenylacetate as substrate increased after MiPo. The effect of HDL on endothelial function was analyzed by the response to increasing doses of acetylcholine of aorta rings co-incubated with the lipoproteins in an isolated organ bath. The HDL from rabbits that received placebo partially inhibited the endothelium-dependent vasodilation. In contrast, the negative effect of HDL on endothelial function was reverted by MiPo supplementation. These results show that the beneficial effects of pomegranate are mediated at least in part by improving the functionality of HDL, probably via the reduction of the content of triglycerides in these lipoproteins. [ABSTRACT FROM AUTHOR]- Published
- 2020
- Full Text
- View/download PDF
18. Surface mineralized biphasic calcium phosphate ceramics loaded with urine-derived stem cells are effective in bone regeneration.
- Author
-
Xing, Fei, Li, Lang, Sun, Jiachen, Liu, Guoming, Duan, Xin, Chen, Jialei, Liu, Ming, Long, Ye, and Xiang, Zhou
- Subjects
STEM cell transplantation ,CELL proliferation ,ANIMAL experimentation ,BODY fluids ,BONE morphogenetic proteins ,BONE regeneration ,BONE substitutes ,BONE grafting ,BONE diseases ,CELL physiology ,ENZYME-linked immunosorbent assay ,GENE expression ,HISTOLOGICAL techniques ,POLYMERASE chain reaction ,RABBITS ,URINALYSIS ,PHENOTYPES ,CALCIUM compounds ,TISSUE engineering ,IN vitro studies ,SURFACE properties ,IN vivo studies - Abstract
Background: Segmental bone defects caused by trauma, tumors, or infection are a serious challenge for orthopedists in the world. Recent developments in tissue engineering have provided a new treatment for segmental bone defects. Urine-derived stem cells (USCs) can be obtained noninvasively and might be a new kind of seed cells used in bone tissue regeneration. Therefore, the first aim of the present study was to investigate the biological characteristics of USCs. The second aim of the present study was to study the osteogenic effect of surface mineralized biphasic calcium phosphate ceramics (BCPs) loaded with USCs in vitro and in vivo. Methods: We isolated USCs from the urine of healthy adult donors and evaluated the biological characteristics of USCs in vitro. We mineralized the surface of BCPs by simulated body fluid (SBF). Cell adhesion and proliferation of USCs on the surface mineralized BCPs were evaluated. Osteogenic proteins and genes of USCs on the surface mineralized BCPs were texted by enzyme-linked immunosorbent assay (ELISA) and real-time polymerase chain reaction (RT-PCR) assay. Critical-sized segmental bone defects model in New Zealand white rabbits were established and randomly divided into 4 groups (surface mineralized BCPs loaded with USCs, BCPs loaded with USCs, surface mineralized BCPs, and BCPs) based on the implant they received. The therapeutic efficacy of the scaffolds in a large bone defect at post-implantation was evaluated by imaging and histological examination. Results: USCs isolated in our study expressed stem cell-specific phenotypes and had a stable proliferative capacity and multipotential differentiation capability. Surface mineralized BCPs promoted osteogenic proteins and genes expression of USCs without affecting the proliferation of USCs. After 10 weeks, the amount of new bone formation was the highest in the group of surface mineralized BCPs loaded with USCs. Conclusion: USCs, from non-invasive sources, have good application prospects in the field of bone tissue engineering. Surface mineralized BCPs can significantly enhance osteogenic potential of USCs without changing biological characteristics of BCPs. Surface mineralized BCPs loaded with USCs are effective in repairing of critical-sized segmental bone defects in rabbits. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
19. Bovine Milk Fats and Their Replacers in Baked Goods: A Review.
- Author
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Huang, Zhiguang, Stipkovits, Letitia, Zheng, Haotian, Serventi, Luca, and Brennan, Charles S.
- Subjects
FAT substitutes ,DAIRY products ,FAT ,WESTERN countries ,BAKED products ,LIPIDS ,MILKFAT ,FAT content of food - Abstract
Milk fats and related dairy products are multi-functional ingredients in bakeries. Bakeries are critical local industries in Western countries, and milk fats represent the most important dietary lipids in countries such as New Zealand. Milk fats perform many roles in bakery products, including dough strengthening, textural softeners, filling fats, coating lipids, laminating fats, and flavor improvers. This review reports how milk fats interact with the ingredients of main bakery products. It also elaborates on recent studies on how to modulate the quality and digestibility of baked goods by designing a new type of fat mimetic, in order to make calorie- and saturated fat-reduced bakery products. It provides a quick reference for both retailers and industrial manufacturers of milk fat-based bakery products. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
20. Miraka benefits from model predictive control solution.
- Subjects
DAIRY products - Abstract
The article reviews the dairy products factory Miraka, located in New Zealand.
- Published
- 2018
21. Those not-so-crazy Danes.
- Author
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Archer, Richard
- Subjects
HIGH technology ,MANUFACTURING industries ,FOOD industry ,AGRICULTURAL industries ,BUSINESS-to-business transactions ,BUSINESS to consumer transactions - Abstract
The author discusses how the high technology (high-tech) manufacturing industry of New Zealand can learn from Denmark in achieving a cleaner and more vibrant sector. He claims that New Zealand should emulate Denmark's move to expand its food and agriculture sectors by supplying high-tech equipment. He also claims that companies should attract business to business (B2B) and business to customer (B2C) customers in order to expand.
- Published
- 2014
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