東華大學圖書館 |

Sensory Determinants of Preference for Vegetables During Childhood.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Sensory Determinants of Preference for Vegetables During Childhood./
作者:	Estay Villalon, Karinna Pilar.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	153 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-06, Section: B.
Contained By:	Dissertations Abstracts International81-06B.
標題:	Food science. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=22622489
ISBN:	9781392894262

Sensory Determinants of Preference for Vegetables During Childhood.
Estay Villalon, Karinna Pilar.

Sensory Determinants of Preference for Vegetables During Childhood. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 153 p.

Source: Dissertations Abstracts International, Volume: 81-06, Section: B.

Thesis (Ph.D.)--University of California, Davis, 2019.

This item must not be sold to any third party vendors.

In spite of all the health benefits of vegetable consumption, children are not eating the recommended amount of vegetables. Moreover, interventions oriented towards promoting vegetable consumption have trouble increasing vegetable intake in childhood. This dissertation aims to contribute to a deeper understanding of children's vegetable preferences through the analysis of children's vegetable liking, as well as the factors involved. Specifically, this study analyzes children's vegetable preferences, as well as those of their mothers, in three different countries: Chile (CL), China (CN) and the USA. Three hundred and eighty-four children (ages 5 -12) and their mothers completed the study (CL mothers n=93; CL children n=130; CN mothers n=128; CN children n=130; US mothers n=100; US children n= 124). All participants took part in two tasting sessions in which they tasted and rated a total of 14 different vegetables for liking and described the samples using Check-All-That-Apply (CATA) questions. The second tasting session included an exit survey answered by mothers, which collected information about eating habits, feeding practices and demographics about participants. The results show significant differences in the degree of overall vegetable liking between the children from the three countries (p < 0.05). Specifically, Chinese children rated vegetables with a higher liking scores than American children, and American children rated liking higher than Chilean children. When mothers and children were analyzed together, the results showed that mothers liked vegetables more than their children (p < 0.05). However, when countries were analyzed individually, it was observed that in Chile and China, mothers liked vegetables the same amount as their children, while in the US American mothers liked vegetables more than their children (p < 0.05). Also, it was observed that Chilean mothers liked a smaller variety of vegetables than their children, Chinese mothers liked the same variety of vegetables as their children, and American mothers liked a larger variety than their children. When the effects of age and gender were analyzed, there was no significant influence on children's overall liking in any of the three countries. The analysis of the impact of liking rates of each sensory modality (appearance, aroma, taste and texture) on children's overall liking showed that across all countries and age groups, liking for taste and texture are the best predictors of children's overall liking. The penalty analysis of CATA questions used by children to describe the samples showed that the mean impact of the attributes used varied among countries. However, in the three countries children used the same three positive attributes to describe the samples they liked ("fresh", "sweet" and "juicy") (p <0.05). The analysis of consumer preference segments allowed us to characterize children with different levels of vegetable liking. Specifically, three preference segments were uncovered for children in Chile and in China, and two for children in the USA. The variety of children's diets, the amount of vegetables eaten at lunch/dinner and the level of mothers' satisfaction with their children's vegetable intake were factors used to characterize the different child preference segments according to their level of liking (p < 0.05). Also, the use of a 7-point hedonic scale to rate the samples across countries was analyzed. Our results show that children in the three countries, as well as mothers in Chile, showed a polarized use of the scale, characterized by extreme likes and dislike answers. While mothers in China and in the US showed a more gradual use of the scale, which was characterized by scores concentrated in the liking side of the scale with a gradual reduction of scores towards the opposite side of the scale. To evaluate how children's vegetable liking varies within their social environment, we developed the Degree of Liking Difference Index, which is the sum of the absolute difference between the likings of the child with the likings of a second person. Vegetable liking resemblance were analyzed between children and their mothers, children and their siblings, and children and their peers. The results show that children's vegetable liking was most similar to that of their siblings, followed by mothers and, finally, peers. When the similarities of vegetable liking between children and their family and peers was analyzed by country, the results showed the greatest similarities in China, followed by the USA, and Chile. Finally, it was observed that vegetable liking similarities between children and their social influencers increased as children ages increased.

ISBN: 9781392894262Subjects--Topical Terms:

3173303
Food science.
Subjects--Index Terms:

children

Sensory Determinants of Preference for Vegetables During Childhood.
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300 $a 153 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-06, Section: B.
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520 $a In spite of all the health benefits of vegetable consumption, children are not eating the recommended amount of vegetables. Moreover, interventions oriented towards promoting vegetable consumption have trouble increasing vegetable intake in childhood. This dissertation aims to contribute to a deeper understanding of children's vegetable preferences through the analysis of children's vegetable liking, as well as the factors involved. Specifically, this study analyzes children's vegetable preferences, as well as those of their mothers, in three different countries: Chile (CL), China (CN) and the USA. Three hundred and eighty-four children (ages 5 -12) and their mothers completed the study (CL mothers n=93; CL children n=130; CN mothers n=128; CN children n=130; US mothers n=100; US children n= 124). All participants took part in two tasting sessions in which they tasted and rated a total of 14 different vegetables for liking and described the samples using Check-All-That-Apply (CATA) questions. The second tasting session included an exit survey answered by mothers, which collected information about eating habits, feeding practices and demographics about participants. The results show significant differences in the degree of overall vegetable liking between the children from the three countries (p < 0.05). Specifically, Chinese children rated vegetables with a higher liking scores than American children, and American children rated liking higher than Chilean children. When mothers and children were analyzed together, the results showed that mothers liked vegetables more than their children (p < 0.05). However, when countries were analyzed individually, it was observed that in Chile and China, mothers liked vegetables the same amount as their children, while in the US American mothers liked vegetables more than their children (p < 0.05). Also, it was observed that Chilean mothers liked a smaller variety of vegetables than their children, Chinese mothers liked the same variety of vegetables as their children, and American mothers liked a larger variety than their children. When the effects of age and gender were analyzed, there was no significant influence on children's overall liking in any of the three countries. The analysis of the impact of liking rates of each sensory modality (appearance, aroma, taste and texture) on children's overall liking showed that across all countries and age groups, liking for taste and texture are the best predictors of children's overall liking. The penalty analysis of CATA questions used by children to describe the samples showed that the mean impact of the attributes used varied among countries. However, in the three countries children used the same three positive attributes to describe the samples they liked ("fresh", "sweet" and "juicy") (p <0.05). The analysis of consumer preference segments allowed us to characterize children with different levels of vegetable liking. Specifically, three preference segments were uncovered for children in Chile and in China, and two for children in the USA. The variety of children's diets, the amount of vegetables eaten at lunch/dinner and the level of mothers' satisfaction with their children's vegetable intake were factors used to characterize the different child preference segments according to their level of liking (p < 0.05). Also, the use of a 7-point hedonic scale to rate the samples across countries was analyzed. Our results show that children in the three countries, as well as mothers in Chile, showed a polarized use of the scale, characterized by extreme likes and dislike answers. While mothers in China and in the US showed a more gradual use of the scale, which was characterized by scores concentrated in the liking side of the scale with a gradual reduction of scores towards the opposite side of the scale. To evaluate how children's vegetable liking varies within their social environment, we developed the Degree of Liking Difference Index, which is the sum of the absolute difference between the likings of the child with the likings of a second person. Vegetable liking resemblance were analyzed between children and their mothers, children and their siblings, and children and their peers. The results show that children's vegetable liking was most similar to that of their siblings, followed by mothers and, finally, peers. When the similarities of vegetable liking between children and their family and peers was analyzed by country, the results showed the greatest similarities in China, followed by the USA, and Chile. Finally, it was observed that vegetable liking similarities between children and their social influencers increased as children ages increased.
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