Evaluation of hedonic scores and R-indices for visual, flavour and texture preferences of apple cultivars by British Columbian and Nova Scotian consumers

1999 ◽  
Vol 79 (3) ◽  
pp. 395-399 ◽  
Author(s):  
M. A. Cliff ◽  
K. Sanford ◽  
E. Johnston
Keyword(s):  
Regional Differences ◽  
Consumer Preferences ◽  
Block Design ◽  
Consumer Preference ◽  
Incomplete Block Design ◽  
Visual Preferences ◽  
Apple Cultivars ◽  
Carry Over ◽  
Hedonic Scale ◽  
Nova Scotian

Apple preferences were examined for regional, cultivar and order-of presentation effects. Seven apple cultivars, four (Honeycrisp, Fiesta, Cortland and Sinta) grown in Nova Scotia (NS) and three (Creston, Silken and Gala) grown in British Columbia (BC) were evaluated for visual, flavour and texture preferences using a nine-point hedonic scale. In both locations, 126 consumers evaluated all seven cultivars for their visual preferences and four of the seven cultivars for their flavour and texture preferences, using an incomplete-block design balanced for presentation order and carry-over effects. On average, the flavour and texture scores of NS consumers were higher than those of BC consumers. Regional differences were most pronounced for visual preferences, with BC consumers preferring Gala and Creston (BC-grown cultivars) and NS consumers preferring Fiesta and Cortland (NS-grown cultivars). Despite these differences, three of the four top-rated cultivars were identical (Gala, Fiesta and Cortland). Flavour preferences were the most similar, with Gala, Silken, Creston and Cortland being preferred by both NS and BC consumers. Regional differences for texture preferences were less pronounced than those for visual preferences, with Creston preferred by both groups. The BC consumers preferred the texture of Silken and Creston, while the NS consumers preferred the texture of Creston, Honeycrisp, Cortland and Gala. Results from the nine-point hedonic scale were correlated with results from the four-point R-index scale. Correlations were highest when discrimination among the cultivars was greatest. Both methodologies effectively quantified consumer preferences, with hedonic scores expressing results in relative terms and the R-index expressing results as probabilities. Key words: Sensory evaluation, consumer preference, apple-cultivar preference, R-index

scholarly journals Assessing Consumer Preferences of Scab-resistant Apples: A Sensory Evaluation

2010 ◽  
Vol 20 (5) ◽  
pp. 885-891 ◽  
Author(s):  
Kathleen Kelley ◽  
Jeffrey Hyde ◽  
James Travis ◽  
Robert Crassweller
Keyword(s):  
Sensory Evaluation ◽  
Production Systems ◽  
Consumer Preferences ◽  
Apple Scab ◽  
Organic Production ◽  
Initial Assessment ◽  
State University ◽  
Pennsylvania State University ◽  
Apple Cultivars ◽  
Hedonic Scale

One hundred forty-nine consumers participated in a sensory evaluation, conducted on 14 Nov. 2008, at The Pennsylvania State University, University Park, PA, to determine consumer acceptance and perceptions of scab-resistant apples (Malus ×domestica). Consumers were exclusively screened for liking and eating apples. The study provides tree fruit growers and marketers in the mid-Atlantic United States with information on consumer preferences for apples that might substitute for common cultivars that require frequent apple scab pesticide applications. Resistant cultivars are also attractive in organic production systems. During the 10-minute sensory evaluation, panelists rated five scab-resistant apples [‘Crimson Crisp’, ‘GoldRush’, NY 75907–49 (NY 49), ‘Crimson Topaz’, and ‘Sundance’] and a commercially available non-resistant cultivar, Jonagold, on appearance, aroma, texture, flavor, and overall liking using a nine-point hedonic scale (9 = “like extremely” and 1 = “dislike extremely”). Three of the four apples tested with a red peel (‘Crimson Topaz’, NY 49, and ‘Crimson Crisp’) were rated significantly higher than the other apples on the basis of appearance, receiving mean ratings that were between “like moderately” and “like very much,” a rating of 7 and 8, respectively. In regards to texture, ‘Crimson Topaz’ and ‘Crimson Crisp’ were significantly higher than ‘Jonagold’ and NY 49, with mean ratings between “like slightly” and “like moderately.” For overall liking scores, ‘Crimson Crisp’, which was rated between “like slightly” and “like moderately,” was not significantly different from ‘Crimson Topaz’ and ‘GoldRush’; however, ‘Crimson Crisp’ was rated higher than ‘Jonagold’, NY 49, and ‘Sundance’. Panelists also responded to questions regarding their food-purchasing attitudes and behaviors. Sixty-two percent of panelists purchased fresh apples for themselves and/or other household members at least “two or three times a month” during an average year. Only 2.7% responded that they purchased fresh apples “more than once a week.” This study of consumer preferences provides an initial assessment of the feasibility of marketing new apple cultivars and organic apples within the mid-Atlantic U.S. region. Those that performed well in the sensory evaluation should be candidates for additional market research.

scholarly journals Comparison of Mean Scores and R-indices for Consumer Preferences of Apple Cultivars

HortScience ◽  
1998 ◽  
Vol 33 (7) ◽  
pp. 1239-1240 ◽  
Author(s):  
M.A. Cliff ◽  
M.C. King ◽  
C. Hampson
Keyword(s):  
Analysis Of Variance ◽  
Consumer Preferences ◽  
Consumer Preference ◽  
Breeding Program ◽  
Visual Preference ◽  
Conventional Analysis ◽  
Golden Delicious ◽  
Apple Cultivars ◽  
Preference Ratings

Conventional (analysis of variance, mean preference scores) and novel (R-index) methodologies for hedonic assessments of `Silken' and `Creston' apple (Malus ×domestica Borkh.) cultivars from the breeding program at Summerland, B.C., were compared with the standard cultivars Royal Gala, Jonagold, and Golden Delicious. Visual and flavor preferences were evaluated for either three or five cultivars by panels of 50 to 200 consumers. Consumers were successfully able to evaluate five apple samples at a given session. Significant differences in mean preference scores and R-indices were found among cultivars. Both `Silken' and `Creston' had higher flavor and lower visual preference ratings than did `Royal Gala'. Results were consistent for both methodologies when panels consisted of 100 or more consumers. R-index, however, expressed the results as a probability rather than a mean score, and was a more understandable and interpretable measure of consumer preference than were preference ratings.

scholarly journals Preferensi Konsumen Pada Ginger Milk Curd Dengan Penambahan Ascorbic Acid Dari Strawberry

2020 ◽  
Vol 11 (1) ◽  
pp. 37-46
Author(s):  
Made Citra Yuniastuti
Keyword(s):  
Ascorbic Acid ◽  
Consumer Preferences ◽  
Descriptive Analysis ◽  
Consumer Preference ◽  
Raw Milk ◽  
Tourist Attraction ◽  
Liquid Form ◽  
Quantitative Descriptive Analysis ◽  
Quantitative Descriptive ◽  
Hedonic Scale

AbstrakGinger milk curd is a kind of dessert consist of milk, sugar and ginger. The zingipan protease will curdling the milk and transform its liquid form into semi-gel. In this research some acidic acid from strawberry will be added to see if its strength the firmness of the curd. The curd was investigated using the Quantitative Descriptive Analysis regarding sensory aspects. Consumer preferences were also assessed using hedonic scale and analyse with Wilcoxon method. The results show that acidic acid from strawberry is significantly proofed strengthen the firmness of the curd and consumer prefer the flavor of the ginger milk pudding with the addition of the strawberry. The result of this research can be taken as an alternative of tourist attraction in some village which has tourism package near breeder and farmer so the visitor can utilize the raw milk and fresh strawberry into delicious dessert.Keywords : Consumer Preference; Curd; Dessert; Ginger; StrawberryAbstrakGinger milk curd adalah sebuah dessert yang dibuat dengan cara sederhana yaitu mencampurkan susu sapi yang dihangatkan bersama gula ke dalam air perasan jahe. Enzim protease yang terdapat pada jahe akan membuat susu dari cair berubah menjadi semi padat seperti puding. Kandungan acidic acid yang terdapat pada strawberry diduga akan mampu menstabilkan dan memperkuat curd yang terbentuk. Quantitative Descriptive Analysis digunakan untuk menganalisis aspek sensori sedangkan uji hedonik dengan analisis metode wilcoxon digunakan untuk mengetahui produk manakah yang lebih disukai panelis konsumen. Hasil penelitian menunjukkan bahwa penambahan air perasan strawberry terbukti secara signifikan memperkuat curd dan hasil uji hedonik pada aspek flavor menunjukkan kesukaan panelis pada ginger milk curd dengan penambahan air perasan strawberry. Penelitian ini dapat menjadi rekomendasi bagi pelaku usaha di desa wisata untuk menambah atraksi di sekitar peternakan dan perkebunan strawberry agar pengunjung dapat langsung mengolah bahan lokal secara sederhana dan dapat langsung dikonsumsiKata Kunci: Consumer Preference; Curd; Dessert; Ginger; Strawberry 

scholarly journals Diversity in Nutrient Content and Consumer Preferences of Sensory Attributes of Peanut (Arachis hypogaea L.) Varieties in Ugandan Agroecosystems

2021 ◽  
Vol 13 (5) ◽  
pp. 2658
Author(s):  
Rose Nankya ◽  
John W. Mulumba ◽  
Hannington Lwandasa ◽  
Moses Matovu ◽  
Brian Isabirye ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Consumer Preferences ◽  
Consumer Preference ◽  
Nutrient Content ◽  
Intraspecific Diversity ◽  
Laboratory Evaluation ◽  
Organoleptic Characteristics ◽  
Arachis Hypogaea L ◽  
Cultivated Peanut ◽  
Nutrient Amounts

The cultivated peanut (Arachis hypogaea L.) is one of the most widely consumed legumes globally due to its nutrient content, taste, and affordability. Nutrient composition and consumer preference were determined for twenty local farmer (landrace) and commercial peanut varieties grown in the Nakaseke and Nakasongola districts of the central wooded savanna of Uganda through sensory and laboratory evaluation. Significant differences in nutrient content (p < 0.05) among peanut varieties were found within and across sites. A significant relationship between nutrient content and consumer preference for varieties within and across sites was also realized (Wilk’s lambda = 0.05, p = 0.00). The differences in nutrient content influenced key organoleptic characteristics, including taste, crunchiness, appearance, and soup aroma, which contributed to why consumers may prefer certain varieties to others. Gender differences in variety selection were significantly related to consumer preference for the crunchiness of roasted peanut varieties (F = 5.7, p = 0.016). The results imply that selecting different varieties of peanuts enables consumers to receive different nutrient amounts, while experiencing variety uniqueness. The promotion of peanut intraspecific diversity is crucial for improved nutrition, organoleptic appreciation and the livelihood of those engaged in peanut value chains, especially for the actors who specialize in different peanut products. The conservation of peanut diversity will ensure that the present and future generations benefit from the nutritional content and organoleptic enjoyment that is linked to unique peanut varieties.

Exploring the Role of Interaction Effects in Visual Conjoint Analysis

2015 ◽  
Vol 137 (9) ◽  
Author(s):  
Brian Sylcott ◽  
Jeremy J. Michalek ◽  
Jonathan Cagan
Keyword(s):  
Conjoint Analysis ◽  
Consumer Preferences ◽  
Consumer Preference ◽  
Interaction Effects ◽  
Fractional Factorial ◽  
Main Effects ◽  
Full Factorial ◽  
Biased Estimates ◽  
Data Requirements

In conjoint analysis, interaction effects characterize how preference for the level of one product attribute is dependent on the level of another attribute. When interaction effects are negligible, a main effects fractional factorial experimental design can be used to reduce data requirements and survey cost. This is particularly important when the presence of many parameters or levels makes full factorial designs intractable. However, if interaction effects are relevant, main effects design can create biased estimates and lead to erroneous conclusions. This work investigates consumer preference interactions in the nontraditional context of visual choice-based conjoint analysis, where the conjoint attributes are parameters that define a product's shape. Although many conjoint studies assume interaction effects to be negligible, they may play a larger role for shape parameters. The role of interaction effects is explored in two visual conjoint case studies. The results suggest that interactions can be either negligible or dominant in visual conjoint, depending on consumer preferences. Generally, we suggest using randomized designs to avoid any bias resulting from the presence of interaction effects.

scholarly journals Identifying the Optimal Application Rate of Three Fertilizers Used to Grow New Guinea Impatiens

2016 ◽  
Vol 34 (4) ◽  
pp. 118-122
Author(s):  
A.K. Ostrom ◽  
C.C. Pasian
Keyword(s):  
Controlled Release ◽  
Consumer Preferences ◽  
Tap Water ◽  
Consumer Preference ◽  
New Guinea ◽  
Water Soluble ◽  
Plant Weight ◽  
Preference Ratings ◽  
New Guinea Impatiens

This manuscript describes the effect of controlled-release, and water-soluble fertilizers on the growth and quality of New Guinea impatiens (NGI) (Impatiens hawkeri Bull.). Three different fertilizers were applied at three rates each in order to investigate their effect on growth and quality of ‘Paradise New Red.’ NGI. Fertilizer treatments included 1) a 20-4.4-16.6 water-soluble fertilizer (WSF), 2) a 10-1.8-2.5 soybean-based fertilizer (SBF), and 3) a 15-4-10, three-to four-month longevity controlled-release fertilizer (CRF). CRF was applied as a pre-plant at 1×, 0.75×, and 0.5× the label rate. WSF and SBF fertigation rates of 75, 150, and 250 mg·L−1 N (75, 150, and 250 ppm N), respectively, were used based on a common range of fertigation rates in a greenhouse setting from what is considered relatively low, moderate, and high for NGI production. Plants were irrigated or fertigated by hand every 1 to 5 days as needed, based on environmental conditions and plant size, with either approximately 300 mL (10.4 oz) of either tap water or a fertilizer solution. SPAD readings, above ground plant weight, consumer preference ratings, and cumulative flower number were measured and used to calculate a quality index (QI). Optimal fertilizer rates as determined by the QI were found to be 1) CRF at 7.11 kg·m−3 (11.8 lb·yd−3), 2) SBF at 150 mg·L−1 (150 ppm) N, and 3) WSF at 75 mg·L−1 (75 ppm) N. With the application method used in this work, the WSF was more efficient than the SBF because it produced high quality plants with less fertilizer applied. While for the most part overall consumer preference ratings coincided with plant dry weight, there were some exceptions, indicating that consumers can prefer plants that are not necessary the largest as indicated by their dry weights. Consumer preferences may not coincide with typical plant parameters of plant growth all the time. Consumer preferences should be always considered in an industry that sell its products based mainly on their appearance.

scholarly journals PREFERENSI KONSUMEN SAGU DI KOTA KENDARI

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Helviani Helviani ◽  
Sitti Aida Adha Taridala ◽  
Azhar Bafadal ◽  
Budiyanto Budiyanto
Keyword(s):  
Consumer Behavior ◽  
Customer Satisfaction ◽  
Conjoint Analysis ◽  
Consumer Satisfaction ◽  
Consumer Preferences ◽  
Consumer Preference ◽  
Raw Material ◽  
Market Demand ◽  
Satisfaction Index ◽  
Main Thing

Sago is a potential source of food with high calories and carbohydrates (rice equivalent). Sago consumer preferences can provide important information in making marketing strategy sago, and also is one of the indicators of market demand for the products of sago. The purpose of this study were to understand the srage of the purchase decision process undertaken by consumers of sago; analyze the level of customer satisfaction with sago attributes associated from sago; and analyze the consumer preference for various atrributes inherent in sago. The study was conducted in Kendari, Southeast Sulawesi Province. Respondents were all members of a population of 21 respondents consisting of 15 restaurant owners who provide meals made from sago and 6 owners agro-industry made from raw sago. The study used Engel Model Analysis, Costumer Satisfaction Index (CSI) Analysis, and Conjoint Analysis. The results of the analysis gives an overview of some consumer behavior based on the decision-making process shows that the benefits sought in the purchase buy sago sago is as a raw material to be processed into a menu of traditional food and traditional cakes Kendari. Color sago is the main thing, which will be seen and considered by consumers to make purchases between and will buy sago in traditional markets as close to the place of business. The level of consumer satisfaction in this study were satisfied with the preference category that consumers like sago with normal color (pure white), normal scent (odorless), low prices and package sizes are 20 kg. The resulting combination of sago four attributes (color, flavor, price and package sizes) is acceptable to describe consumers' desire sago in Kendari. Keywords: consumer behavior; sago; Engel Model; Customer Satisfaction Index (CSI); conjoint analysis

scholarly journals Accuracy of Ranking Individuals in Field Tests of Different Designs: A Computer Simulation

2006 ◽  
Vol 55 (1-6) ◽  
pp. 70-77 ◽  
Author(s):  
Chang-Yi Xie ◽  
Y.-B. Fu ◽  
A. D. Yanchuk
Keyword(s):  
Computer Simulation ◽  
Genetic Variance ◽  
Block Design ◽  
Additive Genetic Variance ◽  
Field Tests ◽  
Incomplete Block ◽  
Single Tree ◽  
Incomplete Block Design ◽  
Variation Patterns ◽  
Site Variation

Abstract A computer simulation was conducted to investigate the accuracy of ranking individual trees in field tests of different designs. A test population that consists of 900 trees from 45 full-sib families generated by three 6-parent disconnected half-diallels was considered. One incomplete block design with single-tree plots and four complete block designs with 1, 2, 4, and 10-tree row plots were examined. Various narrow-sense heritabilities, site variation patterns (patch sizes and gradient slopes), and two levels of dominant to additive genetic variance ratios (0 and 0.30) were evaluated. Results indicate that the accuracy of ranking depends more on the heritability of the trait and less on the magnitude of the dominant genetic variance, site variation patterns, and field designs. With patchy site variation, differences in ranking accuracy were observed for different designs, but became smaller with higher heritabilities. Impact of environmental gradient on the accuracy of individual ranking was negligible. Incomplete block design with single-tree plots (ICB1) provided the most accurate ranking when heritability was low while complete block design with 2-tree plots (RCB2) appeared to be the best when heritability was high. Large row plot designs were among the least effective in all the simulated scenarios. For traits with medium heritabilities, the statistical efficiencies of ICB1 and RCB with 1 and 2-tree plots are comparable.

scholarly journals PRODUCT ATTRIBUTES DETERMINE THE PREFERENCE OF HERBAL MEDICINE CONSUMERS

2020 ◽  
Vol 1 (3) ◽  
pp. 149-154
Author(s):  
Himmatul Miftah ◽  
Ita Novita ◽  
H Tsuwaibah ◽  
M. A. Sunaryo
Keyword(s):  
Consumer Behavior ◽  
Herbal Medicine ◽  
Consumer Preferences ◽  
Consumer Preference ◽  
Medicinal Products ◽  
Product Attributes ◽  
Herbal Medicinal Products ◽  
Herbal Medicine Product ◽  
Close Relationship ◽  
Herbal Medicinal

Abstract: The emergence of a wide variety of herbal medicinal products requires marketers to better understand consumer behavior. The various brands offered make consumers tend to have certain preferences before making a purchase decision. This study aims to determine the attributes of herbal medicinal products that determine the level of consumer preference in the purchasing process and the closeness of the attributes to consumer preferences. The method used is interviews with consumers which are then processed with conjoint analysis to determine the attributes that are most important to consumers in making a purchase. The research concludes that the most important attributes in purchasing herbal medicine in order from the most important are the properties, price, expiration time and packaging. There is a close relationship between the combination of attributes studied and consumer preferences for herbal medicine. This study is limited to four attributes and does not use ranking ratings on the stimulus or combination of attributes, consumer behavior. The uniqueness of this study is to analyze the attributes simultaneously.   Keywords: Herbal medicine product attributes, consumer preferences, conjoin analysis, level of importance

scholarly journals Pengaruh Genetik dan Lingkungan Terhadap Pertumbuhan Sengon (Falcataria molucanna) Ras Lahan Jawa

2018 ◽  
Vol 4 (2) ◽  
pp. 35-41
Author(s):  
Mudji Susanto ◽  
Liliana Baskorowati
Keyword(s):  
Block Design ◽  
Incomplete Block ◽  
Incomplete Block Design

Tegakan sengon (Falcataria molucanna) ras lahan Jawa dibangun di  Bali dengan tujuan untuk mengetahui keragaman pertumbuhan yang disebabkan oleh faktor lingkungan dan genetik pada umur 1-3 tahun. Tegakan sengon tersebut dibangunsebagai uji keturunan dengan rancangan Baris Kolom Incomplete Block Design (IBD). Tegakan sengon tersebut menguji 25 famili half-sib dengan single plot. Hasil penelitian menunjukkan bahwa keragaman pertumbuhan yang disebabkanoleh faktor genetik (aditif ) maupun faktor lingkungan berubah-ubah setiap tahun. Pada tahun pertama ragam aditif mempunyai peranan 3,38% untuk tinggi pohon dan 0,67% untuk diameter batang; pada tahun kedua ragam aditif sebesar3,40% untuk tinggi pohon dan 3,05% untuk diameter batang; dan pada tahun ketiga ragam aditif sebesar 3,90% untuk tinggi pohon dan 7,00% untuk diameter batang. Sedangkan sisanya mulai tahun pertama sampai ketiga pertumbuhandipengaruhi oleh ragam lingkungan. Berdasarkan hasil penelitian disimpulkan bahwa pertumbuhan tanaman sengon ras lahan Jawa mayoritas dipengaruhi oleh faktor lingkungan, sehingga disarankan tanaman sengon ras lahan Jawa harusmenggunakan sitim silvikultur yang tepat yang dapat mempercepat pertumbuhan tanaman sengon.

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