Microwave-assisted drying of Ocimum sanctum leaves: Analysis of moisture content, drying kinetic model, and techno-economics

Kusuma, Heri Septya; Izzah, Destiya Nurul; Linggajati, Irmanda Wastu Lintu

doi:10.1016/j.afres.2023.100337

Cited by 32 publications

(1 citation statement)

References 137 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…E. elatior inflorescences that were already dried had lower moisture content than fresh flowers. The decrease in moisture content was caused by water molecules contained in plant cells evaporating owing to heat during the drying process [25].…”

Section: The Application Of E Elatior Tea In the Drying Methodsmentioning

confidence: 99%

Optimization of ultrasound-assisted extraction using box-Behnken design, method validation, and analysis of phytochemicals from drying treatments in the application of Etlingera elatior inflorescence

Firdhauzi,

Takahashi Yupanqui,

Setyaningsih

et al. 2024

FFHD

View full text Add to dashboard Cite

Background: Etlingera elatior inflorescence, a potential source for herbal tea, undergoes a drying process that could enhance the active ingredients and health benefits. This study introduces the use of ultrasound-assisted extraction (UAE) to improve conventional extraction and increase the yield of phytochemicals, thereby presenting a novel approach to functional foods and nutrition. Objective: This study aims to optimize the UAE method using the Box-Behnken Design (BBD), a statistical experimental design widely used in the field of functional foods and nutrition. The determination of phytochemicals was validated using the optimized UAE. Chlorogenic acid from the extract was analyzed using HPLC-DAD and compared with that from Indonesia. According to the development of herbal tea, the phytochemical contents and inhibition of DPPH scavenging antioxidant activity were examined for the three drying treatments compared to freeze-drying. Methods: Box-Behnken Design (BBD) was used to optimize the condition of UAE with three variables: solvent concentrations (70%, 85%, 100%), solid-to-solvent ratios (1:20, 1:15, 1:10), and temperatures (30°C, 50°C, 70°C). The TPCs and TFCs of the ethanol extract were analyzed as observed responses. Repeatability precision (%CV) and recovery were validated for the optimized UAE. HPLC-DAD analyzed the chlorogenic acid of the extract and compared it to the Thai E. elatior extract and Indonesia. In applying E. elatior tea, phytochemical contents, and DPPH∙, scavenging antioxidant activity was examined for three drying treatments and compared to the freeze-drying treatment. Results: The suggested condition of optimized UAE extraction was 70% ethanol, 50°C, and a 1:20 solid-to-solvent ratio. %Repeatability precision of TPCs and TFCs for the extract was significantly <5%, and %recovery >90%. Freeze-drying and cabinet-drying treatments had significantly higher TPCs than others. Especially in freeze-drying treatment, the TFCs of the extract from Indonesia were significantly greater than those in Thailand (p<0.05). For DPPH∙ antioxidant activity, all treatments except freeze-drying of the extracts from Indonesia had higher inhibition of DPPH∙ antioxidant activity than those from Thailand. Conclusion: The optimized UAE extraction method was validated with high precision and accuracy. All drying treatments influenced the phytochemical contents and Inhibition of DPPH antioxidant activity in the inflorescences of both Thailand and Indonesia. Keywords: Box-Behnken Design, drying treatment, tea, method validation, phenolic.

show abstract

Section: The Application Of E Elatior Tea In the Drying Methodsmentioning

confidence: 99%

Optimization of ultrasound-assisted extraction using box-Behnken design, method validation, and analysis of phytochemicals from drying treatments in the application of Etlingera elatior inflorescence

Firdhauzi,

Takahashi Yupanqui,

Setyaningsih

et al. 2024

FFHD

View full text Add to dashboard Cite

show abstract

Facile fabrication of polystyrene/lignin /OV-POSS nanocomposite monolith by thermally induced phase separation method for wastewater cleanup

Alassod,

Alkhateeb,

Alghoraibi

et al. 2024

Polym. Bull.

View full text Add to dashboard Cite

Impact of Various Drying Technologies on the Drying Characteristics, Physico-chemical Properties, and Antioxidant Capacity of Walnut Green Husk

Ao,

Wang,

Shen

et al. 2024

Food Bioprocess Technol

View full text Add to dashboard Cite

Walnut green husk (WGH) is common agricultural by-product with high yield and serious pollution. The present study aimed to evaluate the impacts of solar drying (SD), pulsed vacuum drying (PVD), short and medium infrared radiation drying (SMIR), hot air drying based on temperature and humidity control (TH-HAD), and heat pump drying (HPD) on the drying characteristics, energy consumption, physicochemical properties, bioactive compounds content and antioxidant capacity of WGH. Drying characteristics and drying kinetics showed that artificial drying can significantly improve drying efficiency. Compared with SD, the drying time of PVD, SMIR, TH-HAD, and HPD were reduced by 63.57%, 78.68%, 66.28%, and 53.97%, respectively. Specific energy consumption analysis demonstrated that HPD showed the lowest specific energy consumption, 2.15 kW•h/kg. Hydration properties analysis revealed PVD had the best water holding capacity and HPD sample had the best water solubility index (43.44%). Structural analysis showed the cell wall structure of WGH was damaged by different drying methods. Overall, Among the five drying methods, HPD has lower energy consumption, less time, and maintains good antioxidant activity. HPD has good potential in the commercial-scale production of WGH.

show abstract

Microwave-assisted drying of Ocimum sanctum leaves: Analysis of moisture content, drying kinetic model, and techno-economics

Cited by 32 publications

References 137 publications

Optimization of ultrasound-assisted extraction using box-Behnken design, method validation, and analysis of phytochemicals from drying treatments in the application of Etlingera elatior inflorescence

Optimization of ultrasound-assisted extraction using box-Behnken design, method validation, and analysis of phytochemicals from drying treatments in the application of Etlingera elatior inflorescence

Facile fabrication of polystyrene/lignin /OV-POSS nanocomposite monolith by thermally induced phase separation method for wastewater cleanup

Impact of Various Drying Technologies on the Drying Characteristics, Physico-chemical Properties, and Antioxidant Capacity of Walnut Green Husk

Contact Info

Product

Resources

About