Low Temperature Seaweed Drying Using Dehumidified Air

Djaeni, Mohamad; Sari, Dessy Agustina

doi:10.1016/j.proenv.2015.01.002

Cited by 52 publications

(28 citation statements)

References 8 publications

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“…The higher drying temperatures increased constant rate of the drying (Table 2), as also found n the previous studies [24,25]. The constant rate of the drying at drying temperature 70⁰C was 9.6 times higher than at drying temperature 50⁰C.…”

Section: Drying Temperaturessupporting

confidence: 87%

Effect Carrier Agent Formulation in Drying Rate and Antioxidant Activity of Roselle Extract

et al. 2018

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Roselle (Hibiscus sabdarifa L) contains anthocyanins as the natural colorant and antioxidant. Drying the roselle extract was aims to produce the dry product that easy consumption as antioxidant. The carrier agent was added in roselle extract to improve the drying rate and maintain the nutritional value. This research studied the effect of carrier agent in drying rate and antioxidant activity. The method consists of two step involving roselle extraction using ultrasonic and the drying process. The roselle extraction by ultrasonic use the water as the solvent. The carrier agent (0%,5%,10% of maltodextrin) was added in roselle extract. The mixture was then dried in tray dryer dehumidification using zeolite in drying temperature 50,60, and 70⁰C. As the response, the moisture content was observed by gravimetry every 15 minutes for 150 minutes. The result showed that Page model was fitted to determine the constant of drying rate. Higher concentration of carrier agent enhanced the moisture evaporation process. Based on the DPPH analysis, the degradation of antioxidant activity in temperature 70⁰C was 2.14 times higher than in temperature 50⁰C. As the conclusion, addition of maltodextrin can speed up the drying process and retain the antioxidant activity of.

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Section: Drying Temperaturessupporting

confidence: 87%

Effect Carrier Agent Formulation in Drying Rate and Antioxidant Activity of Roselle Extract

et al. 2018

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“…Insectsother animals and environmental condition disturbed the quality dried product. Tray dryer as modern drying was applied to overcome it [6], [7] and capable presented a hygiene shrimp pasteextended shelf life [8]. Rhodamine-B was synthetic dye that used mostly in milling process.…”

Section: Resultsmentioning

confidence: 99%

Enhancing Quality of Drying Mixed Shrimp Paste from Karawang with Red Pigment by Angkak

Sari

Djaeni

Hakiim

et al. 2018

JTS

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 existence of shrimp paste farmer is supported by activities of auction fish place one of which located Ciparage beach, Karawang-West Java. Perpetrators produced 2 products such as shrimp paste and mixed shrimp paste. Utilization of Rebon shrimp by totality does not need other additives because drying process brings out the color that had itself so final product becomes redness. Involvement of Petek fish almost partially could reduce the color quality so the society used Rhodamine-B dye. This is widely spreading in the area because this matter is distributed by seller directlydoor to door and the price is affordablecheaper. Novelty this research is application of tray dryer with operating temperature variables-40, 50, 60 o C for 7 hours and the presence of Angkak as natural the red pigment that it is safe for human health. The results showed that the optimum condition of drying mixed shrimp paste was achieved by temperature 40 o C. This is not about how much and quickly the moisture that evaporating into the air. Paradigm to chemical composition organoleptic and antioxidant activity-DPPH method also was be consideration for that matter. Physically, this dried product had normal smell, salty taste, brown color, soft texture, solid shape, and normal appearance.

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“…The largest problem with using waste heat is dehumidification; air dehumidification methods include ventilation, cooling and liquid dehumidification (Xu et al 2012). Mohamad Djaeni dried seaweed using dehumidified air, and the low relative humidity of the dehumidified air enhanced the driving force for drying and shortened the drying time (Djaeni & Sari 2015). In this paper, by dehumidifying the grain dryer exhaust and using the latent heat of phase change from vapor condensation during dehumidification, we greatly reduced the dryer energy consumption.…”

Section: Introductionmentioning

confidence: 97%

Research on an electric energy‐saving grain drying system with internal circulation of the drying medium

Wang

Qiao³

et al. 2020

J Food Process Engineering

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In this study, we designed a 5HLN‐R‐50 electric grain dryer with internal circulation of the drying medium based on the analysis of drying medium enthalpy and humidity status variation diagrams. We aimed to reduce the dryer energy consumption and exhaust gas emission. Using clean electric energy instead of a conventional dryer heat source, the drying system can cyclically dry high‐moisture grain with zero emissions. The experimental results indicate that the condensation effect is suitable when the ratio of the cool and hot air flows is 6:1 at a heat transfer coefficient of the condenser of 79.5 W/(m2.K) and a specific heat consumption of 3,916 kJ/kgH2O when compared with the Chinese standard of 7,500 kJ/kgH2O, that is, a maximum energy savings of 48%. This paper proposes a novel technological method and idea, studies the differences in energy efficiency, emissions reduction and clean production, and provides a reference for replacing the conventional grain dryer heat source of coal with electricity. Practical applications This drying system is applied in circular grain drying; a corn drying experiment indicates that compared with the specific energy consumption stipulated by the national standards of China, the highest energy savings is 48%, and zero release nonpollution is shown. The state parameters of the dried material and drying medium are displayed graphically in real time, and the operating parameters of the drying process are intuitively tracked in real time and automatically adjusted.

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Low Temperature Seaweed Drying Using Dehumidified Air

Cited by 52 publications

References 8 publications

Effect Carrier Agent Formulation in Drying Rate and Antioxidant Activity of Roselle Extract

Effect Carrier Agent Formulation in Drying Rate and Antioxidant Activity of Roselle Extract

Enhancing Quality of Drying Mixed Shrimp Paste from Karawang with Red Pigment by Angkak

Research on an electric energy‐saving grain drying system with internal circulation of the drying medium

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