Drying Characteristics and Water-soluble Polysaccharides Evaluation of Kidney Shape <i>Ganoderma lucidum</i> Drying in Air Circulation System

Prasetyo, Dwi Joko; Jatmiko, Tri Hadi; Poeloengasih, Crescentiana Dewi; Kismurtono, M.

doi:10.1088/1755-1315/101/1/012012

Cited by 3 publications

(5 citation statements)

References 8 publications

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“…However, Polysaccharides as well as other bioactive ingredients in Ganoderma lucidum are thermo-sensitive substances and will be degraded by the high drying temperature. There were previous studies of experimental drying Ganoderma lucidum to determine a suitable drying method with the optimum input drying parameters to obtain a high Polysaccharide content of Ganoderma lucidum after drying [2]- [4]. The results showed that the suitable drying method to retain Polysaccharide's high content in Ganoderma lucidum was drying at low temperature in the range of 45 -65°C.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Model of Radio Frequency Assisted Heat Pump Drying of Ganoderma Lucidum (Ganoderma Boninense)

Hay¹,

Duc²,

Kien³

2022

International Journal on Advanced Science, Engineering and Information Technology

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This study proposed a mathematical model which was used to predict the temperature and moisture content of Ganoderma lucidum (Ganoderma boninense) during the radio frequency (RF) assisted heat pump (HP) drying process. The simultaneous heat and mass transfer equations were established based on the physical and flat plate models for drying Ganoderma lucidum and the specific assumptions for the proposed problem. The finite difference method was used to solve the proposed heat transfer and moisture transfer problem, in which, pdepe function was adjusted and complemented with Matlab software. The temperature and moisture content of the material in the drying process was predicted. The effect of the output RF power on the temperature and moisture content of the material was evaluated. The drying process's input parameters were drying air temperature of 40 o C, air velocity of 1.2 m/s, and an output RF power of 1.95 kW, 0.65 and 0 kW. The results showed that when the output RF power increases, the heating rate increases, and the drying time is shortened significantly. The drying material temperature reaches the drying air temperature in 20 minutes, 30 minutes, and 220 minutes and the drying time is 465, 555, and 700 minutes, corresponding to output RF power of 1.95 kW, 0.65 and 0 kW. The predicted temperature and moisture content of the material were compared with experimental drying data, and a considerably good agreement was found.

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Section: Introductionmentioning

confidence: 99%

Mathematical Model of Radio Frequency Assisted Heat Pump Drying of Ganoderma Lucidum (Ganoderma Boninense)

Hay¹,

Duc²,

Kien³

2022

International Journal on Advanced Science, Engineering and Information Technology

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“…Nilai laju pengeringan tertinggi diperoleh pada awal waktu pengeringan dan terus menurun sampai nilai terendah pada periode akhir pengeringan.Hasil ini sama untuk rumput laut Eucheuma cottonii (Fithriani et al, 2016) dan bahan lainnya (Darvishi et. al, 2014;Prasetyo, Jatmiko, Poeloengasih, & Kismurtono, 2017;Tulek, 2011). Pada laju pengeringan menurun, mekanisme fisik berupa Fithriani et al, 2016;Fudholi et.…”

Section: Hasil Dan Pembahasan Pengaruh Waktu Pengeringan Dan Kadar Aiunclassified

“…Penurunan ni lai kadar air mengakibatkan penurunan nilai laju pengeringan (Prasetyo et al, 2017). Gambar 4 memperlihatkan penurunan kadar ai r bahan seiring dengan bertambahnya waktu dan hal ini menyebabkan penurunan nilai laju pengeringan.…”

Section: Hasil Dan Pembahasan Pengaruh Waktu Pengeringan Dan Kadar Aiunclassified

“…Pada kedua jenis rumput laut terlihat bahwa kenaikan suhu pengeringan menyebabkan waktu pengeringan menjadi semakin singkat. Fenomena ini sama dengan hasil penelitian terdahulu pada rumput laut dan komoditas lain (Ertekin Gupta et al, 2011;Prasetyo et al, 2017). Pada suhu 40 dan 50 °C, Ulva sp.…”

Section: Pengaruh Suhu Terhadap Laju Pengeringanunclassified

“…Kurva yang terbentuk kemudian dievaluasi dengan empat model pengeringan lapis tipis dan hasil evaluasi disajikan pada Tabel 4. Hasil evaluasi kurva pengeringan kedua jenis rumput pada berbagai variasi suhu memperlihatkan model (Darvishi et al, 2014;Ertekin & Yaldiz, 2004;Prasetyo et al, 2017;Tulek, 2011). Model lain yang kesesuaiannya mendekati model Midilli adalah model Page.…”

Section: Model Matematika Pengeringan Ulva Sp Dan Sargassum Spunclassified

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Karakteristik Pengeringan Rumput Laut Ulva sp. dan Sargassum sp.

Prasetyo

Jatmiko

Poeloengasih

2018

JPBKP

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Dalam penelitian ini karakteristik pengeringan dari rumput laut Ulva sp. dan Sargassum sp. telah dipelajari. Proses pengeringan dilakukan pada kondisi variasi suhu 40, 50, dan 60 °C di dalam alat pengering laboratorium. Laju pengeringan dievaluasi dengan empat model pengeringan lapis tipis, yakni Newton, Page, Two-Term, dan Midilli. Model yang paling sesuai ditentukan dari nilai sum square error (SSE) dan root mean square error (RMSE) terendah, serta nilai r tertinggi. Laju pengeringan kedua rumput laut memperlihatkan adanya periode laju pengeringan menurun dan tidak ada periode laju pengeringan konstan pada pengeringan Ulva sp. dan Sargassum sp. Hasil menunjukkan bahwa laju pengeringan meningkat seiring peningkatan kadar air dan suhu, dan laju pengeringan menurun seiring dengan berjalannya waktu. Laju pengeringan tertinggi diperoleh pada suhu 60 °C untuk Ulva sp. dan Sargassum sp. Hasil evaluasi menunjukkan bahwa model Midilli memiliki nilai SSE dan RMSE terendah, serta nilai r tertinggi. Berdasarkan hasil tersebut model Midilli merupakan model yang paling sesuai untuk menggambarkan laju pengeringan Ulva sp. dan Sargassum sp.

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Variability of the Content of Flavonoids and Polysaccharides of Bidens Cernua Herb.

Karazhan¹

2020

JCPRM

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The aim of the research was to study the variability of the content of polysaccharides and flavonoids of Bidens cernua herb, depending on the terms of harvesting, drying conditions and place of growth on the territory of the Republic of Belarus. It was shown that the maximum polysaccharide content was observed in the phase of budding and mass flowering of the plant. Unlike polysaccharides, the content of flavonoids in the budding phase was significantly lower than in the mass flowering phase (p<0.05), which accounts for the maximum content of flavonoids, and in particular, luteolin-7-O-glucoside. The highest polysaccharide content was noted for raw plant materials undergone natural drying or at 40 and 60 °C without ventilation. An increase in the drying temperature or the use of ventilation during drying led to a significant decrease in the content of this group of biologically active substances. The content of flavonoids of Bidens cernua herb, dried at elevated temperature with ventilation, regardless of the drying temperature used, was higher than the content of this group of biologically active substances in comparison with samples of raw plant materials subjected to natural drying (p<0.05). A higher flavonoid content was also noted for Bidens cernua herb, dried without ventilation at 40 and 60 °C. The content of polysaccharides and flavonoids of Bidens cernua herb, depending on the harvesting region, varied between 35.64–90.52 mg/g and 23.11–49.86 mg/g, respectively, and was most dependent on the amount of precipitation per year region. Based on the results obtained, it is recommended to harvest Bidens cernua herb during mass flowering and to dry at 40 °C without ventilation.

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Drying Characteristics and Water-soluble Polysaccharides Evaluation of Kidney Shape Ganoderma lucidum Drying in Air Circulation System

Cited by 3 publications

References 8 publications

Mathematical Model of Radio Frequency Assisted Heat Pump Drying of Ganoderma Lucidum (Ganoderma Boninense)

Mathematical Model of Radio Frequency Assisted Heat Pump Drying of Ganoderma Lucidum (Ganoderma Boninense)

Karakteristik Pengeringan Rumput Laut Ulva sp. dan Sargassum sp.

Variability of the Content of Flavonoids and Polysaccharides of Bidens Cernua Herb.

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