Banca de QUALIFICAÇÃO: MONALISA SANTANA COELHO DE JESUS

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : MONALISA SANTANA COELHO DE JESUS
DATA : 27/09/2018
HORA: 08:00
LOCAL: Sala de aula do PPGCTA
TÍTULO:

CHARACTERIZATION AND BIOACESSIBILITY OF NATURAL DYES IN
VARIETIES OF ORGANIC SWEET POTATO (Ipomoea batatas (L.) Lam)

PALAVRAS-CHAVES:

Key words: natural dyes, bioaccessibility, mass spectrometry, sweet potato, organic

PÁGINAS: 43
GRANDE ÁREA: Ciências Agrárias
ÁREA: Ciência e Tecnologia de Alimentos
SUBÁREA: Ciência de Alimentos
ESPECIALIDADE: Química, Física, Fisico-Química e Bioquímica dos Alim. e das Mat-Primas Alimentares
RESUMO:

The sweet potato (Ipomoea batatas L.) is a rustic vegetable, rich in carbohydrates,
functional phytochemicals, natural dyes, antioxidants and pro-vitamins A. It has great
potential to generate social and economic development for the most needy and distant
of urban centers populations. It can aid in the prevention of poverty and diseases
related to malnutrition, vitamin A deficiency and oxidative stress. This vegetable is an
option to boost organic production systems and generate healthier foods with higher
levels of nutrients and functional substances in a sustainable way. In addition, their
natural dyes (carotenoids and anthocyanins) can replace the synthetic dyes used in
industrialized foods with functional advantages. The carotenoids and anthocyanins
profile of many sweet potato varieties are still being published in recent works, as the
chemical structures of many of these substances have not yet been elucidated. The
functional potential of these phytochemicals depends on their stability to heat
treatments and availability after the digestive process. The objective of this thesis
project is to characterize and quantify the carotenoids and anthocyanins of four
varieties of sweet potatoes grown in the organic system and to evaluate retention and
bioaccessibility "in vitro". Four organic sweet potato varieties (two varieties rich in
carotenoids and two anthocyanin-rich) were cultivated for this purpose and prepared
in fresh, cooked and fried forms for evaluation of the contents, retention, profile and
bioaccessibility of natural dyes. The analyzes are being done by spectrophotometry,
High Efficiency Liquid Chromatography with Diodes Array Detector (DAD-CLAE)
and High Resolution Mass Spectrometry with Electrospray Ionization (QTOF-MS /
MS). It is expected to know the identity and quantity of each carotenoid and
anthocyanin present in the studied varieties and the behavior of these substances after
processing (cooking and frying) and digestion.

MEMBROS DA BANCA:
Externo ao Programa - 636.674.287-15 - ANA CRISTINA MIRANDA SENNA GOUVEA - EMBRAPA
Interno - 1524368 - MARIA IVONE MARTINS JACINTHO BARBOSA
Interno - 507.802.047-00 - RONOEL LUIZ DE OLIVEIRA GODOY - EMBRAPA