The application of mixed cultures of lactic acid bacteria (LAB) and yeasts in the baking process may improve a number of important properties of the final bakery products such as flavour, texture and retention of freshness compare to the traditional baker's yeast bread. This study offers the possibility for Brazilian bakers to improve the quality of their products. The methods of sponge-dough and direct-dough fermentation containing Lactobacillus brevis and yeast Saccharomyces cerevisiae were employed to verify the effect of mixed cultures in quality technology of sweet bread dough. According to the results, performance of the breads should be good, because the used flour forms a strong gluten network, retains gas and produces a highly expanded structure in the final bakery products. Sensorial evaluation demonstrated that sweet bread produced by sponge-dough fermentation was more acceptable in regard to softness and taste compared to bread produced by direct-dough fermentation.
A intolerância à lactose é uma inabilidade para digerir completamente a lactose, o açúcar predominante do leite. Tal fato se torna preocupante, pois essa condição afeta mais de 75% da população mundial. O objetivo deste trabalho foi propor a produção de um doce de leite com teor reduzido de lactose, testando duas marcas comerciais da ß-galactosidase. Os doces de leite foram submetidos às análises físicas, químicas e sensoriais. Nos testes preliminares verificou-se que o grau de hidrólise total da lactose presente no leite, na concentração de 0,8 g de ß-galactosidase por litro de leite, foi atingido em 6 horas. No doce de leite, os níveis de lactose foram inferiores ao limite de quantificação ( 0,5%), podendo ser considerado com teor reduzido de lactose. Pelo teste sensorial de comparação múltipla, as enzimas ß-galactosidase de ambas as marcas não apresentaram diferença significativa (em nível de 5%) com relação ao sabor do produto, quando comparadas com o padrão, sem o uso da enzima. Já a coloração escura dos doces produzidos com leite tratado com a enzima ß-galactosidase foi atribuída à intensificação da reação de Maillard no pH 6,0 e à hidrólise da lactose com a maior disponibilização de açúcares redutores. A composição centesimal média dos doces de leite produzidos foram 26,9% de umidade, 6,8% de gordura, 8,6% de proteína, 55,8% de carboidratos e 1,7% de cinzas. Pode-se concluir que os doces de leite produzidos com as diferentes marcas da enzima ß-galactosidase podem ser consumidos por portadores intolerantes à lactose.
e3539015This article aims to report the use of PjBL (Project-Based Learning) as a learning process as the guiding methodology in the teaching disciplines (1st period) of the course in Technology in Gastronomy, Dairy Technology (7th Period) of the course of Food Engineering, Cultivation and Therapeutics (5th Period) of the Biotechnology and Phytochemistry and Phytotherapy course (7th Period) of the Pharmacy course. They are presented as teaching actions through the learning that led the students to the research of two products, an idea, and research for the production of a scientific article. The PjBL was structured from a creation project, time formation, such as pre-established data tasks and results analysis. The projects of the four disciplines were divided into four stages, which took place from February 22 to June 27. The motivation and engagement of students during the activities were fundamental factors in learning the contents of learning and development of transversal skills, living up to the fact that elementary education was a process of teaching and learning to make an entry between the content acquired and the classroom and the reality lived by the students, besides enhancing and empowering skills and know-how: autonomy, reflection and group work.Resumo Este artigo tem o objetivo de relatar o uso de PjBL (Project-Based Learning) no processo de aprendizagem como metodologia norteadora nas disciplinas Cozinha fria (1° Período) do curso de Tecnologia em Gastronomia, Tecnologia de laticínios (7° Período) do curso de Engenharia de Alimentos, Cultivo e Terapia Celular (5° Período) do curso de Biotecnologia e Fitoquímica e Fitoterápicos (7° Período) do curso de Farmácia. Apresentam-se as ações de ensino por meio de aprendizagem ativa que levaram os estudantes à formulação de dois produtos, uma ideia e uma pesquisa para produção de um artigo científico. O PjBL foi estruturado desde a concepção do projeto, formação de times, as tarefas com datas de entregas pré-estabelecidas e análise. dos resultados. Os projetos das quatro disciplinas foram divididos em quatro etapas, que se realizaram no período de 22 de fevereiro até 27 de junho. A motivação e engajamento dos estudantes durante a realização das atividades foram fatores fundamentais na construção dos conteúdos de aprendizagem e desenvolvimento de habilidades e competências transversais, fazendo jus ao fato de que o norte desta pesquisa foi a promoção de um processo de ensino e de aprendizagem que faça a conexão entre o conteúdo adquirido em sala de aula e a realidade vivida pelos alunos, além de enaltecer e potencializar habilidades e competências tais como: a autonomia, a reflexão e o trabalho em grupo.Palavras-chave: Aprendizagem baseada em projeto (PjBL), Metodologias de aprendizagem ativa, Ensino contextualizado, Backward design.Keywords: Project-based learning (PjBL), Active learning methodologies, Contextual teaching, Backward design.ReferencesADDERLEY, K. et al. Project methods in higher education. Society for research into higher education, 1975.BARKLEY, E.F.; MAJOR, C.H. Learning assessment techniques: A handbook for college faculty. John Wiley Sons, 2015.BERBEL, N.A.N. As metodologias ativas e a promoção da autonomia de estudantes. Semina: Ciências Sociais e Humanas, v. 32, n. 1, p. 25-40, 2011.BIGGS, J.B.; TANG, C. Teaching for quality learning at university: What the student does. McGraw-hill Education (UK), 2011.BLUMENFELD, P.C. et al. Motivating project-based learning: Sustaining the doing, supporting the learning. Educational psychologist, v. 26, n. 3-4, p. 369-398, 1991.BOSS, S.; LARMER, J. Project Based Teaching: How to create rigorous and engaging learning experiences. ASCD Novato CA. 2018.BUCK INSTITUTE OF EDUCATION Gold Standard PBL: Essential Project Design Elements, 2019. Disponível em https://my.pblworks.org/system/files/documents/ Gold_Standard_PBL_Essential_v2019.pdf Acesso em 29 de maio de 2019.CHANLIN, L-J. Technology integration applied to project based learning in science. Innovations in education and teaching international, v. 45, n. 1, p. 55-65, 2008.CHEN, C. H., YANG, H.C. Revisiting the effects of project-based learning on students’ academic achievement: A meta-analysis investigating moderators. Educational Research Review, v. 26, p. 71-81, 2019.DARLING-HAMMOND, L. et al. Powerful learning: What we know about teaching for understanding. John Wiley Sons, 2015.ENGLISH, M.C.; KITSANTAS, A. Supporting Student Self-Regulated Learning in Problem- and Project-Based Learning. Interdisciplinary Journal of Problem-Based Learning, v. 7, n. 2, p. 128-150, 2013.FUJITA, J.A.L.M. et al. Uso da metodologia da problematização com o Arco de Maguerez no ensino sobre brinquedo terapêutico. Revista Portuguesa de Educação, v. 29, n. 1, p. 229-258, 2016.HELLE, L.; TYNJÄLÄ, P.; OLKINUORA, E. Project-based learning in post-secondary education–theory, practice and rubber sling shots. Higher education, v. 51, n. 2, p. 287-314, 2006.JONES, B.F.; RASMUSSEN, C.M.; MOFFITT, M.C. Real-life problem solving: A collaborative approach to interdisciplinary learning. American Psychological Association, 1997.MICHAELSEN, L.K.; SWEET, M., PARMALEE, D.X. Team-Based Learning: Small-Group Learning Next Big Step. New directions for Teaching and Learning, n.116, 2008.ORLAND-BARAL, L.; YINON, H. When theory meets practice: What student teachers learn from guided reflection on their own classroom discourse. Teaching and Teacher Education, v. 23, p. 957-969, 2007.PRINCE, M.J.; FELDER, R.M. Inductive teaching and learning methods: Definitions, comparisons, and research bases. Journal of Engineering Education, v. 95, n. 2, p. 123-138, 2006.RAVITZ, J.; BLAZEVSKI, J. Assessing the role of online technologies in project-based learning. Interdisciplinary Journal of Problem-Based Learning, v. 8, n. 1, p. 9, 2014.SAROYAN, A. The course design and teaching workshop: why and what. In: SAROUYAN, A.; AMUNDSEN, C. (Ed.) Rethinking teaching in higher education. Sterling: Stylus, 2004.SAWYER, R. K. (Ed.). The Cambridge handbook of the learning sciences. Cambridge University Press, 2005.SCHNEIDER, M.V.; JIMENEZ, R.C. Teaching the fundamentals of biological data integration using classroom games. PLoS computational biology, v. 8, n. 12, p. e1002789, 2012.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.