Fluidized bed drying of stingless bee pot-pollen: Performance of swirling distributor

Autor:	S N Faizal, M F Basrawi, L A Halim, A S M Yudin
Rok vydání:	2020
Předmět:	biology Stingless bee Food spoilage Distributor medicine.disease_cause Pulp and paper industry biology.organism_classification Drying time Fluidized bed drying Fluidized bed Pollen medicine Environmental science Water content
Zdroj:	IOP Conference Series: Materials Science and Engineering. 863:012006
ISSN:	1757-899X 1757-8981
Popis:	Pot-pollen is pollen collected by stingless bee, mixed with honey and bee secretion, and then stored in cerumen pots. Raw pot-pollen contains high moisture content which can lead to excessive fermentation and spoilage. Drying of pot-pollen is needed to preserve them. Typically, elevated temperature can increase the drying performance. However as pot-pollen is heat sensitive, heating above 40 °C is not preferable. Hence, the objective of this study is to explore drying performance of fluidized bed dryer with swirling distributor. The experiment was conducted using three different distributors, a perforated distributor, 45° and 67° swirling distributor, at 1.0 m/s and 1.5 m/s superficial air velocities. The weight of pot-pollen used in this experiment is 50 grams. The drying experiment was conducted at ambient conditions, with no heating being applied to the pot-pollen samples. It was found that 67° swirling distributor at 1.5 m/s superficial air velocity has the highest improvement in terms of drying performance, able to reduce the moisture content from 30.5 % to 18 % for 30 minutes drying time. Hence, using swirling distributor is a suitable enhancement to fluidized bed drying especially for heat sensitive food materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::857158eb2b5e6fb85abbd46b97149b97 https://doi.org/10.1088/1757-899x/863/1/012006 Zobrazit plný text záznamu