Naam A Fitriyono MSc

OrganisatieDepartement Agrotechnologie en Voedingswetenschappen
OrganisatieeenheidFood Quality and Design
Reguliere werkdagen
Ma Di Wo Do Vr


Born in Semarang, Indonesia, graduated from Bogor Agricultural University for his master in Food Science,and graduated from Soegijapranata Catholic University for his bachelor in Food Technology. Now he is employed by the Department of Nutrition Science, Diponegoro University, Indonesia.

He works at Food Quality and Design in project nutritional and health value of tropical fruits during innovative industrial processing. He will use vacuum processing as the processing technology to understand the effect of ripening stage to tropical fruits chips quality.


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Nutritional and Health Value of Tropical Fruits During Vacuum Frying

PhD-fellow: Fitriyono Ayustaningwarno , MSi



Prof.dr. Vincenzo Fogliano

Dr. Ing. Ruud Verkerk

Dr. Ir. Matthijs Dekker

Project term:  July 2015 –July 2019

Sponsor: LPDP (Indonesia Endowment Fund for Education)



Tropical fruit has been widely recognized for their sensorial quality and  their health benefits, being an important source of carbohydrates, vitamins, minerals, fibers and a large number of bioactive compounds. Indonesia is a large producer of tropical fruits such as pineapple, mango, avocado and papaya. Due to a limited shelf life, fresh fruit needs to be processed to prolong the shelf life and maintain its value. Vacuum frying is an emerging technology of innovative processing for fruit and vegetable products. Vacuum frying is a deep-fat frying process, which is carried out in a closed system, below the atmospheric pressure, substantially reducing the boiling point of water and, hence, the frying temperature. Vacuum frying may process fresh fruit into chips that have low moisture and fat content, while preserving certain health benefits.

During vacuum frying, important process variables are temperature, vacuum level, and time as well as specific pre-treatments of the fruit. The frying process causes structural changes to take place; pores produced during gas vapour expansion in frying has been observed in sweet potato, banana, potato, carrot and apple (1-4). Moreover, maturity of the fruit plays a role in structural, compositional and physiological properties, and as a consequence ripening affects physical and textural changes. Starch that is converted into sucrose and maltose during banana ripening affect the product expansion and diameter shrinkage. However, little is known about the effect of vacuum frying on bioactive compounds. Also, the effect of fresh fruit composition and structural properties in relation to the vacuum fried fruit chips has been limited studied.

Many Asian countries (e.g. Indonesia, Japan, Thailand) are using the vacuum frying technology to produce high nutritious snacks with a low fat content. And vacuum fried fruit can be added as ingredient in many different forms to the ready-to-eat breakfast cereals.


Investigate the effect of ripening stage and structural properties (matrix) of selected tropical fruits on the quality (sensorial, nutritional and health) of vacuum fried fruits products.


Systematic literature review of vacuum frying: emphasis on color, texture and nutritional / phytochemical properties and role of maturity stages and fruit matrix.

The role of ripening stage, and fruit matrix on the color, texture and nutritional / phytochemical properties and sensory properties of vacuum fried product.

Quality of vacuum fired fruits during accelerated storage and/or packaging (water activity and rancidity of the products).

Consumer research on the perception and preference of vacuum fried tropical fruits as chips or ingredients of cereals.

Consumer-based optimized product and process design for vacuum frying.


Project number 6153030030


Bachelor of Food Technology at Soegijapranata Catholic University, Indonesia

Master of Food Science at Bogor Agricultural University, Indonesia

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