Microencapsulation of an essential oil (cinnamon oil) by spray drying: Effects of wall materials and storage conditions on microcapsule properties

Abstract

Cinnamon, which has been widely used historically as an herbal medicine, belongs to the Lauraceae family and is mainly found in China and some Southeast Asian countries (Rao & Gan, 2014). Cinnamon essential oil (CEO) is a volatile substance that is typically isolated from the bark of the cinnamontree (Ackermann, Aaltokorte, Jolanki, & Alanko, 2009). CEO contains a range of different aromatic compounds and terpenes, including cinnamaldehyde (70%-80%, w/w), acetophenone (0.3%-0.9%, w/w), benzaldehyde, cinnamyl acetate, and camphor (Li, Kong, & Wu, 2013). In the food industry, CEO is widely used as a spice and preservative due to its unique organoleptic, antimicrobial (Goñi et al., 2009; Zhang, Liu, Wang, Jiang, & Quek, 2016), and antioxidant properties (Özcan & Arslan., 2011). It has also been proposed that it can be used as a nutraceutical or medical agent due to its potential anticancer (Yang, Zheng, Ye, Li, & Chen, 2016) and anti-inflammatory activities (Tung, Chua, Wang, & Chang, 2008). However, CEO tends to chemically degrade when exposed to heat, light, or oxygen (Hermanto, Khasanah, Kawiji, Manuhara, & Utami, 2016), which leads to a loss in its beneficial biological activities (Turek & Stintzing, 2013). Consequently, there is a need to develop effective strategies to protect CEO from degradation during storage. Microencapsulation is the process where by a substance of interest (the "core" material) is encapsulated within another substance (the "wall material") in the form of tiny capsules (Zuidam & Shimoni, 2010). Spray drying is a commonly used technology to encapsulate fragrances, oils, and flavors because it is inexpensive,

Antioxidant and Antimicrobial Agents from Avocado (Persea americana) Seed Extract Encapsulated in Gum Arabic through Spray Drying Method

“…However, the bands appear in the exact wavenumber without any significant difference. It can be interpreted that the interaction between the core material of avocado seed extract and the encapsulation agent of gum arabic is only a physical bonding that does not change the functional group [35].…”

Development of a natural antifungal formulation for grated cheese and a microencapsulation approach using whey protein isolate and maltodextrin blend

“…Encapsulation was performed according to the method of Hu et al. (2020) with some modifications, as described below.…”

Encapsulation of Flavours and Fragrances into Polymeric Capsules and Cyclodextrins Inclusion Complexes: An Update

“…The factors influencing the spray-drying process, as well as the characteristics of the obtained EO-loaded capsules, have been investigated. In a study, the impact of the wall composition (whey protein isolate, maltodextrin and sodium alginate) has been evaluated in terms of the formation and stability of cinnamon EO microcapsules produced by spray-drying [ 47 ]. In another one, the effect of using a reduced pressure and an oxygen-free environment during the spray-drying process (vacuum spray-drying, VSD technique) was examined in comparison to the conventional spray-dryer (SD technique) for the encapsulation of orange EO using maltodextrin and octenyl succinic anhydride-modified starch as the wall material.…”