Beer and allergens

Food allergies are an important global health concern, with many countries following the World Health Organisation’s guidelines with regards to due labelling of foods and, as such, providing forewarning about the presence of potential allergens to potential consumers. While for some produce, the link to specific allergens might be very clear to most consumers, this is not the case for all produce. People with specific food-related allergies usually know what to look out for, but occasionally, unexpected allergens are present in trusted produce. Beer is known to most to contain barley, which will contain gluten-like proteins that can cause allergic reactions in some people. Similarly, beer might contain sulphites and other potential allergens traditionally associated with beers. This review aims to examine a wide range of allergens that have entered the beer production process in recent years. As a result, examples of beers that contain one or more of the 14 EU-UK listed allergens are described, different allergen regulations in different countries are emphasised and their impact explained, and a number of case studies involving allergic reactions following exposure to and the ingestion of beer are highlighted

Acetaldehyde stimulation of the growth of zymomonas mobilis subjected to ethanol and other environmental stresses: effect of other metabolic electron acceptors and evidence for a mechanism

Ethanol-stressed cultures of Z. mobilis showed greatly reduced lag times in growth when supplemented with small amounts of acetaldehyde. This effect could be mimicked by other metabolic electron acceptors, including propionaldehyde and oxygen, indicating a redox-based mechanism. Added propionaldehyde was rapidly and stoichiometrically converted to 1-propanol, suggesting that added acetaldehyde is also reduced during early growth. Acetaldehyde addition measurably accelerated glycolysis in nongrowing cells and also slightly stimulated cultures subjected to temperature change, osmotic shock and salt and acetate stress. Acetaldehyde’s stimulatory effect appears to be due to its ability to accelerate glycolysis via its effect on the cellular redox balance. Acetaldehyde reduction opposes the drain on NAD+ concentrations caused by oxidation of the added ethanol, accounting for the particularly strong effect on ethanol-stressed cells. This study provides evidence for our earlier proposed redox-based mechanism for acetaldehyde’s ability to reduce the lag phase of environmentally stressed cultures and suggests that the effect may have applications in industrial fermentations, especially those inhibited by ethanol and toxic compounds present in, for instance, lignocellulosic hydrolysates

An international study of fast-food dining perceptions: millennial parents, non-millennial parents, and peer judgement during fast-food family dining

Purpose This study aims to examine peer perceptions of a parent dining in a fast-food restaurant with their child. Design/methodology/approach A vignette approach was used to explore consumer assumptions and normative data using a four-country online survey of parents, with 1,200 respondents (300 from each of Australia, Canada, the UK and the USA). The study included qualitative and quantitative thematic analyses of the responses. Findings Family dining in fast-food restaurants was most often associated with an opportunity for family time together (25%), a treat (25%) and an unhealthy food decision (19%). For some, this is a normal meal that should not be judged (11%), for others, this is merely a meal of easy convenience (9%). Fathers, when depicted as the parent in the vignette, were more likely to be praised for spending time with their children, while mothers were more likely to be critiqued for making poor nutritional choices. Respondents from the USA viewed fast-food family dining more favourably than respondents from Australia, Canada or the UK. Social implications Despite rising obesity in these four countries, only 19% of respondents focused on the unhealthy element of the food choice, suggesting that perhaps this element is not on the forefront of consumer decision considerations. Originality/value This paper confirms parental peer perception differences, based on gender and country, regarding opinions on a child dining with a parent in a fast-food restaurant

Young children’s perceptions of branded healthy fast food

Purpose – The purpose of this paper is to examine the role of branding on healthy fast food items. Design/methodology/approach – A total of 20 children (age 4 – 6) performed one open sort and four closed card sorts about food preferences, perceived healthiness and perceived parental preferences using branded and non-branded food image cards. Descriptive statistics were calculated and major themes were identified from the verbatim transcripts. Findings – The children chose whole fruit over branded and bagged apple slices, stating whole fruit would be tastier, healthier and more likely parent approved. When apples were sliced and bagged, perceived taste and healthiness perceptions were variable. Packaged foods were more challenging for the children to conceptualize. Presented with eight options, french fries were the favorite choice as the children did not believe fruit or vegetable side dishes should accompany a cheeseburger. Research limitations/implications – Only children ’ s perceptions and not actual eating behaviors were measured. It was a small sample ( n ¼ 20) with limited sample diversity that would not be representative of all children. Practical implications – Packaging and branding a healthy food item with a fast food logo did not increase the item ’ s appeal to the children. Branding healthy foods in this manner may not lead to increased consumption. Originality/value – The impact of branding healthy items on very young children ’ s perceptions has rarely been examined. Most of the research on branded food items has focused on high calorie processed foods. Using a card sort exercise allowed children, too young to read and write, to articulate similarities, differences and motivations around food preference

Healthier food choices for children through menu pricing

Purpose The purpose of this paper is to investigate the use of pricing (incentive and deterrent) to shift the purchase decision intent of parents when they order food for their child in a fast food restaurant. Design/methodology/approach A financial incentive and a deterrent pricing tactic was tested using an online quantitative approach with a sample of 400 Canadian parents, representative of the Canadian population based on geography, household income and education level. Findings The financial incentive tactic demonstrated that a strong and clearly articulated monetary discount can shift the stated purchase intent of parents into an increased number choosing a healthier side dish for a child’s fast food meal. A deterrent pricing approach was shown to also shift stated purchase intent, and had a higher consumer impact on a per dollar basis. Younger parents (<35 years old) were more likely to select healthier side dishes for their child; however, parents of all ages could potentially be influenced through motivational pricing approaches. Research limitations/implications This was an exploratory study using online surveys and stated purchase intent among Canadian respondents. Examining “stated” purchase intent only through the use of a questionnaire, and without a consequence of the choice, may not reflect a consumer’s real purchase behaviour. A future study should be conducted on pricing approaches in a restaurant setting, where the parents then have the consequences of interacting with the child and the response of the child to the food decision made on their behalf. Practical implications The use of pricing to shift parental food purchase decisions into ordering healthier food items for their children is a promising option, which with further exploration may lead to easily implementable restaurant-level recommendations that achieve the desired results of children eating healthier. Social implications As the frequency of fast food consumption continues to rise, encouraging healthier fast food choices for children could help to combat the troubling rise of obesity in young children. Originality/value While most historical research has focussed on teen or adult consumers, this paper offers insights to academics, marketers and restaurant industry influencers into the previously unexplored area of using pricing to encourage parents to make healthier food choices for children in a fast food restaurant environment

Nutritional Status, Dietary Practices and Physical Activities of Adolescents in Public and Private Schools of Karachi, Pakistan

A comparative study was undertaken to assess the nutritional status, dietary practices and physical activities of school going adolescents in public and private schools (PPSs) of Karachi, Pakistan. A sample of 101 boys and 100 girls from PPSs was randomly selected for their weight,height, waist and hip circumferences, percent body fat and lean body mass measurements. Adolescent boys and girls were interviewed for their dietary practices, socio-economic status, frequency and type of physical activities and their responses were recorded. Results by gender and school type revealed that both the boys and girls of private schools had a significantly lower mean age but significantly higher mean height-for-age Z-score, waist and hip circumferences than the public school adolescents. Food frequency results revealed that the frequency and patterns of breakfast, break-time snack, lunch and dinner of private school going adolescents were more diverse and nutritiously rich. Skipping breakfast was more common among adolescents being higher in girls than boys. Parents of adolescents belonging to private schools had a higher education and socio-economic status. Private school adolescents were physically more active (p<0.05) in terms of frequency and type of physical activities. The study concludes that the adolescents of private schools had a better nutritional status, consumed food and beverages of better quality and were physically more active. However, boys and girls of both the public and private schools failed to meet the national and international dietary guidelines of recommended food servings

Isolation and identification of anthocyanin component in the fruits of Acanthopanax Sessiliflorus (Rupr. & Maxim.) Seem. by means of high speed counter current chromatography and evaluation of Its antioxidant activity

Acanthopanax sessiliflorus (Rupr. & Maxim.) Seem. (Araliaceae) is one of the most abundant species of genus Acanthopanax. The fruits of A. sessiliflorus are used in traditional medical protocols as an analgesic, tonic, antidiabetic, antihypertensive, anti-inflammatory, antitumor, and immune-stimulating agent. In this work, we carried out a comprehensive investigation into the anthocyanin components in the fruits of A. sessiliflorus. The anthocyanin content in the fresh fruits of A. sessiliflorus was determined by high performance liquid chromatography-diode array detection (HPLC/DAD), and the anthocyanin component was isolated from these using high-speed counter-current chromatography (HSCCC) and elucidated by electro-spray ionization-mass spectrometry (ESI/MS), 1H- and 13C-NMR. Its antioxidant activity was evaluated by ferric-reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picrylhydrazyl (DPPH).We found that A. sessiliflorus contained a gross anthocyanin content of 121.35 mg/100 g. HSCCC was successfully used for separation and purification of the primary anthocyanin component, cyanidin 3-xylosyl-galactoside. The antioxidant and radical scavenging tests indicated that cyanidin 3-xylosyl-galactoside is a potent antioxidant

Towards food security of alternative dietary proteins: a comparison between Spain and the Dominican Republic

Current environmental and health concerns encourage a shift towards more sustainable diets. A variety of options are currently being investigated to achieve the food security of alternative-to-meat dietary proteins. The food security of alternative to meat proteins will require attention to the availability, the access, the supply stability and the food safety and quality. The aim of this research is to get insight on consumers’ food attitudes in order to achieve food security of four alternatives to meat proteins, namely, plant-based proteins, mycoproteins, cultured meat proteins and insect proteins in different development contexts in Spain and the Dominican Republic. In doing so, the research analyses meat consumption, reduces consumers’ attitudes using a principal component analysis, predicts first adopters of alternative dietary proteins using a Chi-square test and ranks preferred alternative dietary proteins using a multicriteria decision-making method. The results show that plant-based proteins are the best positioned alternative, while insects are the worst positioned in the Dominican Republic. Gender and education in the Dominican Republic and gender, education and age in Spain are significant factors for the adoption of alternative to meat proteins. Health and convenience attitudes may determine the adoption of alternative dietary proteins in Spain and the Dominican Republic. This research contributes to identifying the consumers’ attitudes to encourage the dietary shift to alternative to meat proteins. It can help industry to market alternative-to-meat proteins in different development contexts to achieve food security

Social media as a means to access millennial wine consumers

Purpose The purpose of this research is to gain insights of the use of social media (SM) in the wine industry. From the theoretical viewpoint to analyze wineries’ social media segmentation, targeting and positioning (STP) to help the wine industry to improve the effectiveness of SM communication. Design/methodology/approach An observational study of Spanish wineries’ SM presence and traffic was carried out during a three-month period in 2013 and repeated in 2016. During this period a questionnaire was distributed to 196 wineries. Logistic regression was used to model the dichotomous outcome variable of whether a winery “does” or “does not” utilise SM. Additionally, leader wineries were interviewed in April/May 2016 about SM segmentation, targeting and positioning (STP). Findings The results show that most wineries are starting in SM without a well-defined strategy. The presence of a webpage is significantly related to the use of SM. SM wineries do not segment and can take advantage of digital targeting strategies. Practical implications Segmentation and targeting SM can improve the effectiveness of the winery SM activities as well as the winery competitiveness in the wine industry. Originality/value This research is a first step in understanding the value of segmentation SM to reach millennial consumers and the importance of targeting to improve the effectiveness of winery on S

Fast immobilization of human carbonic anhydrase II on Ni-Based metal-organic framework nanorods with high catalytic performance

Carbonic anhydrase (CA) has received considerable attention for its ability to capture carbon dioxide efficiently. This study reports a simple strategy for immobilizing recombinant carbonic anhydrase II from human (hCA II) on Ni-based MOFs (Ni-BTC) nanorods, which was readily achieved in a one-pot immobilization of His-tagged hCA II (His-hCA II). Consequently, His-hCA II from cell lysate could obtain an activity recovery of 99% under optimal conditions. After storing for 10 days, the immobilized His-hCA II maintained 40% activity while the free enzyme lost 91% activity. Furthermore, during the hydrolysis of p-nitrophenyl acetic acid, immobilized His-hCA II exhibited excellent reusability and still retained more than 65% of the original activity after eight cycles. In addition, we also found that Ni-BTC had no fixation effect on proteins without histidine-tag. These results show that the Ni-BTC MOFs have a great potential with high efficiency for and specific binding of immobilized enzymes.