Browsing Research Articles (Food Science) by Title
Now showing items 1-20 of 32
-
Application of science and technology by the South African food and beverage industry
(Academy of Science of South Africa, 2018)Significant shifts in the type of foods consumed by South Africans have taken place since 1994 and packaged food and beverage innovation has accelerated since then. Globally, advances in science and technology have benefitted ... -
Changes in the phenolic composition and antioxidant activity of pinotage, cabernet sauvignon, chardonnay and chenin blanc wines during bottle ageing
(South African Society for Enology and Viticulture, 2005)The effect of bottle ageing on the antioxidant activity of Pinotage, Cabernet Sauvignon, Chardonnay and Chenin blanc wines, using the 2,2'-azino-di-(3-ethylbenzothialozine-sulphonic acid) radical cation (ABTS•+) and ... -
Characterisation of pinotage wine during maturation on different oak products
(SASEV, 2008-01)The effect of oak contact on the phenolic composition, total antioxidant capacity (TAC) and colour of Pinotage wines was investigated during maturation. Oak maturation included traditional treatments, such as new, second-fill ... -
Characterization of volatiles and aroma-active compounds in honeybush (Cyclopia subternata) by GC-MS and GC-O analysis
(American Chemical Society, 2012-03)Volatile organic compounds (VOCs) in fermented honeybush, Cyclopia subternata, were sampled by means of a high-capacity headspace sample enrichment probe (SEP) and analyzed by gas chromatography-mass spectrometry (GC-MS). ... -
Chemical characterization of the constituents of the aroma of honeybush, Cyclopia genistoides
(Elsevier, 2008-01)A high-capacity headspace sample enrichment probe (SEP) was used in conjunction with gas chromatography-mass spectrometry (GC-MS) to analyse the volatile organic compounds present in the aroma of dry or infused, unfermented ... -
Comparative genomics of Fructobacillus spp. and Leuconostoc spp. reveals nichespecific evolution of Fructobacillus spp.
(BioMed Central, 2015)Background: Fructobacillus spp. in fructose-rich niches belong to the family Leuconostocaceae. They were originally classified as Leuconostoc spp., but were later grouped into a novel genus, Fructobacillus, based on their ... -
Comprehensive phenolic profiling of Cyclopia genistoides (L.) Vent. by LC-DAD-MS and -MS/MS reveals novel xanthone and benzophenone constituents
(MDPI, 2014-08)A high-performance liquid chromatographic (HPLC) method coupled with diode-array detection (DAD) was optimized for the qualitative analysis of aqueous extracts of Cyclopia genistoides. Comprehensive insight into the phenolic ... -
Effect of drying on the bioactive compounds, antioxidant, antibacterial and antityrosinase activities of pomegranate peel
(BioMed Central, 2016)The use of pomegranate peel is highly associated with its rich phenolic concentration. Series of drying methods are recommended since bioactive compounds are highly sensitive to thermal degradation. The study was conducted ... -
Effect of oxygenation during maturation on phenolic composition, total antioxidant capacity, colour and sensory quality of pinotage wine
(SASEV, 2008-10)The effect of oxygenation on the phenolic composition, total antioxidant capacity (TAC), colour and sensory quality was investigated during the maturation of Pinotage wines. Oxygenation was carried out in discrete monthly ... -
Effect of pork rind and soy protein on polony sensory attributes
(OMICS International, 2015-01)This study determined whether commercially acceptable polony could be manufactured with varying quantities of chicken mechanically recovered meat (MRM), soy flour (S) and pork rind (R). The experimental design used was a ... -
Enzyme kinetics modelling approach to evaluate the impact of high CO2 and super-atmospheric O2 concentrations on respiration rate of pomegranate arils
(Taylor & Francis, 2017)Super-atmospheric O2 has been shown to affect respiration rate (RR), but no model describing its effect on RR for pomegranate arils has been reported. This study investigated the effects of four different gas compositions ... -
Escherichia coli with virulence factors and multidrug resistance in the Plankenburg River
(Academy of Science of South Africa, 2014)Escherichia coli is a natural inhabitant of the gut and E. coli levels in water are considered internationally to be an indication of faecal contamination. Although not usually pathogenic, E. coli has been linked to numerous ... -
The evaluation of the applicability of Fourier Transform Near-Infrared (FT-NIR) spectroscopy in the measurement of analytical parameters in must and wine
(South African Society for Enology and Viticulture, 2001)Fourier transform near-infrared (FT-NIR) spectroscopy can be used as a rapid method to measure the percentage of sugar and to discriminate between different must samples in terms of their free amino nitrogen (FAN) values. ... -
Evaluation of the phytoestrogenic activity of Cyclopia genistoides (honeybush) methanol extracts and relevant polyphenols
(American Chemical Society, 2007-04)Unfermented C. genistoides methanol extracts of different harvestings and selected polyphenols were evaluated for phytoestrogenic activity by comparing binding to both ER subtypes, transactivation of an ERE-containing ... -
Food consumption changes in South Africa since 1994
(Academy of Science of South Africa, 2015)Food consumption patterns in South Africa have changed dramatically over the past decades and likely will continue to change over the coming decades. Various food-related studies conducted over the last few decades ... -
Food ingredient extracts of Cyclopia subternata (Honeybush) : variation in phenolic composition and antioxidant capacity
(MDPI, 2012)Cyclopia subternata plants are traditionally used for the production of the South African herbal tea, honeybush, and recently as aqueous extracts for the food industry. A C. subternata aqueous extract and mangiferin (a ... -
Gamebirds : a sustainable food source in Southern Africa
(SpringerLink, 2013-02)In order to alleviate the current food security situation the world is faced with, it is essential to investigate meat sources which have the potential to be used in a sustainable manner. This review provides substantial ... -
Hyperglycemia-induced oxidative stress and heart disease-cardioprotective effects of rooibos flavonoids and phenylpyruvic acid-2-O-β-D-glucoside
(BMC (part of Springer Nature), 2017)Diabetic patients are at an increased risk of developing heart failure when compared to their non-diabetic counter parts. Accumulative evidence suggests chronic hyperglycemia to be central in the development of ... -
Importance and implications of antibiotic resistance development in livestock and wildlife farming in South Africa : a review
(South African Society for Animal Science, 2018-01-24)Antibiotic resistance (ABR) is regarded as one of today’s major global health challenges. The development of ABR in nature is a complex phenomenon with many influencing factors, of which the farming industry is labelled a ... -
Influence of lower substrate pH and retention time on the efficiency of a UASB bioreactor treating winery waste water
(South African Society for Enology and Viticulture, 1999)A mesophilic laboratory-scale upflow anaerobic sludge bed (UASB) bioreactor design was evaluated for the treatment of winery waste water. In the first experimental study, the hydraulic retention time (HRT) was shortened ...
