Wine Saccharomyces Yeasts for Beer Fermentation

Multiple studies in recent years have shown the potential of Saccharomyces wild yeasts to produce craft beers with new flavour profiles and other desirable properties. Yeasts isolated from food (wine, bread, kombucha…) have shown potential promise for application in brewing. The aim of this study is to evaluate the ability of 141 Saccharomyces yeast strains isolated from the Madrilenian agriculture (from grapes, must, wine, vineyard, and cellars) to produce a novel ale beer. Fermentation activity of the strains was compared against the commercial strain Saccharomyces cerevisiae Safale S-04. In addition to the other aspects such as melatonin production, thirty-three volatile compounds belonging to higher alcohols, esters, aldehydes/cetones, acids, lactones and phenolic groups, were analysed by GC for selection of the strains. Ten strains were finally chosen, among which the most relevant was the strain G 520 showing a higher production of esters, higher alcohols and acids compared with S-04. The apparent attenuation for this strain was lower than commercial strain, which translates into more residual sugars. Furthermore, G 520 was more capable of producing significantly higher amounts of melatonin studied by HPLC, as well as showing a higher antioxidant capacity. Consumer study showed that G 520 strain could be used to produce a potential beer that has a place in the current market.

Consumer study of Indonesian coffee leaves tea as traditional drinks

Coffee leaf tea is a traditional drink obtained by processing coffee leaves and served as tea. Coffee leaf tea is often found in West Sumatra, known as kawa daun. However, coffee leaves have not been widely known in the general public so that coffee leaf tea consumers are rarely encountered. In this study, an analysis was carried out to see consumer preferences for coffee leaf tea. Coffee leaves as a by-product have been declared as a novel food by EU Commission in 2020. Thus, coffee leaf tea products have potential economic value that can be promoted. To determine consumer preferences of Indonesian coffee leaf tea, a descriptive analysis of the consumer using online questionnaire was conducted, followed by conjoint analysis and one-way ANOVA test. As resulted from conjoint analysis, the preferences of Indonesian coffee leaves tea consumer were sequentially driven by level of sweetness, darkness of the colour, and the strength of fragrant. It was observed that gender strongly affected the preference on coffee leaves tea (p-value<0.05).

PENGARUH KUALITAS PRODUK, HARGA DAN LOKASI TERHADAP KEPUTUSAN PEMBELIAN (STUDI KONSUMEN UMKM MIE AYAM DAN BAKSO BAROKAH INA KABUPATEN BUNGO)

This study aims to analyze the influence of product quality, price and location on purchasing decisions of the UMKM consumer study of Mie Ayam and Bakso Barokah Ina in Bungo. The research method used is quantitative, the data sources used are primary and secondary data. The population in this study were all consumers who had bought at Mie Ayam and Bakso Barokah Ina stalls in Bungo. The sample in this study as many as 96 respondents with sampling taken by using accidental sampling technique. Data collection methods used: interviews and questionnaires. The data analysis method used is multiple linear analysis and hypothesis testing using t test, F test and coefficient of determination. From the results of the t-test analysis shows that product quality, price and location partially affect purchasing decisions. The results of the F-test show that product quality, price and location simultaneously affect purchasing decisions. The results of the analysis of the coefficient of determination obtained adjusted R square (R2) of 0.670, this means that 67% of changes in purchasing decisions are caused by the changes in product quality, price and location variables. While the remaining 33% is due to changes in other variables included in the variables studied

A comparison of consumer response using paper and digital ballots for eating quality assessment of beef steaks

A consumer study was conducted to determine if consumers scored beef palatability traits differently on paper vs. digital ballots. Beef subprimals were collected to represent four treatments with inherent variation in eating quality: USDA Select eye round aged 7 d postmortem, USDA Select strip loin aged 7 d postmortem, USDA Choice tenderloin aged 21 d postmortem, and USDA Prime strip loin aged 21 d postmortem. Accessory muscles, external fat, and connective tissue were removed from subprimals. Muscles were fabricated into 2.5 cm steaks and further divided into 2 equal halves for consumer testing. Consumers (n = 360) were served eight samples divided into two blocks representing the two ballot types. Select longissimus lumborum samples were always served in the first and fifth position to start each ballot block, with the remaining three treatments served in a randomized order between the latter three positions within each ballot block. Consumers rated each steak sample for tenderness, juiciness, flavor liking, and overall liking on either a paper or digital ballot, and then rated the paired steak halves on the opposite ballot during the second block of sample testing. Ballot type influenced (P &lt; 0.02) all traits, as consumers scored tenderness, juiciness, flavor liking, and overall liking greater (P &lt; 0.05) on paper ballots compared to digital ballots, regardless of treatment. The smallest margin between paper and digital ballots was observed for tenderness, where scores only differed by 1.8 units. However, juiciness, flavor liking, and overall liking all differed by 3.4 units in favor of paper ballots. Consumers scored palatability traits greater on paper ballots compared to digital ballots, and these findings were consistent across a range of eating quality outcomes. These results should be considered when comparing past consumer testing results using paper balloting systems to those where digital ballots were used.

Sensory Consumer and Descriptive Analysis of Steaks from Beef Animals Selected from Tough and Tender Animal Genotypes: Genetic Meat Quality Traits Can Be Detected by Consumers

The objective of the present study was to determine if animals who were genetically divergent in the predicted tenderness of their meat actually produced more tender meat, as well as what the implications were for other organoleptic properties of the meat. The parental average genetic merit for meat tenderness was used to locate 20 “Tough genotype” heifers and 17 “Tender genotype” heifers; M. longissimus thoracis steaks from all heifers were subjected to sensory affective analysis (140 consumers) and sensory profiling using two trained sensory panels. All sample steaks were treated identically regarding pre- and post-mortem handling, storage, cooking and presentation (i.e., randomised, blind coded). For the affective consumer study, eight steaks were sectioned from the same location of the striploin muscles from each of the heifers. In total, 108 steaks from the Tender genotype and 118 from the Tough genotype were tested in the consumer study to determine the preference or liking of these steaks for appearance, aroma, flavour, tenderness, juiciness and overall acceptability. The consumer study found that the Tender genotype scored higher (p < 0.0001) for liking of tenderness, juiciness, flavour and overall acceptability compared to the Tough genotype. Similar results were generally found for the separate consumer age cohorts (18–64 years) with lower sensory acuity in the 65+ age cohort. For the descriptive analysis, the Tender genotype scored numerically more tender, juicy and flavoursome, although the differences were only significant for one of the panels. The critical outcome from this study is that parental average genetic merit can be used to pre-select groups of animals for tenderness, which, in turn, can be detected by consumers.

Amaranth Microgreens as a Potential Ingredient for Healthy Salads: Sensory Liking and Purchase Intent

Objective: To identify liking, acceptability, and purchase intent of salads prepared from amaranth microgreens in a mixture with lettuce and carrots. Design/Methodology/Approach: Seven formulations of amaranth microgreens, lettuce, and carrots were made. The study was conducted through a centralized location consumer study. The level of liking was measured with a 9-point hedonic scale, while acceptability and purchase intent were measured with a binomial scale. Results: In general, consumers indicated that they liked salad samples within a range of 6 (liked slightly) and 7 (liked moderately). Formulation 7 (with the highest proportion of carrot) was pleasant to the consumer in aftertaste, flavor, and overall liking. Formulation 3 (a balanced mixture of its three ingredients) was liked in its attributes: colors, texture, appearance, and smell. Overall liking had a significant impact on purchase intent. Study Limitations/Implications: Study results represent only the segment of the surveyed population, most of which are young people between 18 and 25 years old (60%). Findings/Conclusions: Amaranth aroma can impact the liking of amaranth microgreen-based salads without causing rejection. The use of carrots in combination with amaranth microgreens can improve the acceptability of salads. Salad formulations with amaranth proportions of 22 to 33.3% have more opportunity in their purchase intent.

Forecasting the nearly unforecastable: why aren’t airline bookings adhering to the prediction algorithm?

Using 27 million flight bookings for 2 years from a major international airline company, we built a Next Likely Destination model to ascertain customers’ next flight booking. The resulting model achieves an 89% predictive accuracy using historical data. A unique aspect of the model is the incorporation of self-competence, where the model defers when it cannot reasonably make a recommendation. We then compare the performance of the Next Likely Destination model in a real-life consumer study with 35,000 actual airline customers. In the user study, the model obtains a 51% predictive accuracy. What happened? The Individual Behavior Framework theory provides insights into possibly explaining this inconsistency in evaluation outcomes. Research results indicate that algorithmic approaches in competitive industries must account for shifting customer preferences, changes to the travel environment, and confounding business effects rather than relying solely on historical data.

Development and Consumer Perception of a Snack Machine Producing Customized Spoonable and Drinkable Products Enriched in Dietary Fiber and Protein

The aim of the study was to evaluate consumer perceptions toward customized snacks produced with a Healthy Snack Machine (HSM) prototype, at-site of the purchase and consumption. The present study had a multi-disciplinary approach including both snack product and HSM development (hardware and user interface). Snack development included both instrumental (viscosity, colloidal stability) and sensory characterization (by trained sensory (N = 10) and consumer (N = 55) panels) of spoonable and drinkable, oat- and dairy-based snack products, fortified with protein and/or dietary fiber. The protein and fiber addition reduced viscosity in spoonable products but did not affect the consistency of drinkable samples. Oat-based samples differed from dairy-based in multiple attributes in sensory profiling. In consumer sample testing, sample odor and taste were the most and least preferred aspects, respectively. In the snack machine testing, a qualitative consumer study (N = 33) showed that the HSM was easy to use, the user interface was clear, the ordering process was quick, and the participants were interested in using the HSM in the future. The snack choices (spoonable/drinkable and dairy/oat base) made by the consumers were distributed equally, but the berry-flavor was preferred over cocoa and vanilla. The most common HSM usage scenarios were “between work/school and hobbies” and “in transit from one place to another”.