The investigation of reinforcement properties of nano-CaCO3 synthesized from Achatina fulica snail shell through mechanochemical methods on epoxy nanocomposites

The aim of the work was to characterize chitosan extracted from snail shell and evaluate its use as a disintegrant and binder in metronidazole tablet formulation in comparison with standard chitosan (SC). The mechanical properties were assessed using crushing strength and friability, while the release properties were assessed using disintegration and dissolution times. The extracted chitosan (EC) was crystalline in nature and the scanning electron microscopy (SEM) showed polygonal particles with rough surface. The moisture and swelling capacity was 1.80% and 15.00%, respectively. The densities and flow properties were significantly (p<0.05) higher than those of the SC. As a binder, the crushing strength of formulations containing EC was higher than SC, but both formulation failed friability test. There was significant difference between the disintegration times of the metronidazole formulations containing EC and SC as a disintegrant. The result showed that EC is more effective as a binder in tablet formulations. Dhaka Univ. J. Pharm. Sci. 20(1): 31-39, 2021 (June)

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PEMANFAATAN KITOSAN DARI LIMBAH CANGKANG BEKICOT (Achatina fulica) SEBAGAI ADSORBEN LOGAM BERAT SENG (Zn)

Konversi ◽

10.20527/k.v5i1.4775 ◽

2018 ◽

Vol 5 (1) ◽

pp. 22

Author(s):

Stevano Victor M. ◽

Bayu Andhika ◽

Isna Syauqiah

Keyword(s):

Heavy Metals ◽

Atomic Absorption ◽

Water Samples ◽

Size Variation ◽

Second Phase ◽

Achatina Fulica ◽

Snail Shell ◽

Production Stage ◽

Two Phases ◽

Chitosan Powder

Abstrak- Telah dilakukan pemanfaatan cangkang bekicot (Achatina fulica) sebagai adsorben logam berat seng (Zn). Penelitian ini bertujuan untuk mengetahui jumlah kitosan yang didapat dari cangkang bekicot, dan mengetahui kemampuan adsorben kitosan dalam uji adsorpsi yang menggunakan sampel air yang tercemar seng (Zn). Pembuatan kitosan dari cangkang bekicot dilakukan dengan dua tahap yaitu tahap pembuatan kitosan dengan variasi ukuran kitosan 250 micron dan 355 micron. Tahap pembuatan kitosan terdiri dari pembuatan serbuk cangkang bekicot, deproteinasi, demineralisasi, depigmentasi dan deasetilasi. Tahap ke dua yaitu uji penyerapan kitosan terhadap logam berat seng (Zn) dengan variasi jumlah massa kitosan yang digunakan yaitu: 1 gram, 3 gram, 6 gram dan 9 gram. Sampel tersebut diuji dengan menggunakan Atomic Absorption Spectrophotometric (AAS) untuk mengetahui konsentrasi logam berat seng (Zn) yang terkandung di dalamnya. Hasil penelitian menunjukan bahwa kitosan yang didapat dari cangkang bekicot untuk ukuran 250 micron yang sebesar 95,27%, dan untuk ukuran 355 micron yaitu sebesar 96,18%. Daya serap optimum kitosan didapat pada kitosan berukuran 250 micron dengan massa kitosan 9 gram. Kata kunci: Adsorbsi, mikron, cangkang bekicot dan logam berat seng (Zn) Abstract- The used of snail shell (Achatina fulica) as adsorbent of heavy metals zinc (Zn). This study aims to determine the amount of chitosan derived from snail shells, and knowing the ability of chitosan adsorbent in adsorption tests using water samples were contaminated zinc (Zn). Preparation of chitosan from the shells of snails be done in two phases: the manufacture of chitosan with chitosan size variation of 250 micron and 355 micron. Production stage consists of the manufacture of chitosan powder snail shells, deproteinization, demineralization, depigmentasi and deacetylation. The second phase of the test chitosan absorption of heavy metals zinc (Zn) with a variation of the mass amount of chitosan that is used as follows: 1 gram, 3 grams, 6 grams and 9 grams. The sample is tested by using Atomic Absorption Spectrophotometric (AAS) to determine the concentration of heavy metals zinc (Zn) contained in it. The result showed that chitosan is obtained from the snail shell to the size of 250 microns, which equal to 95.27%, and for the size of 355 microns that is equal to 96.18%. Optimum absorption of chitosan obtained at chitosan measure 250 microns with a mass of 9 grams of chitosan. Keywords: Adsorption, micron, snail shells and heavy metals zinc (Zn).

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PENGGUNAAN BERBAGAI TEKANAN DAN WAKTU HIDROLISIS PADA PRODUKSI GLUKOSAMIN HIDROKLORIDA DARI KITOSAN CANGKANG BEKICOT (Achatina fulica)

KOVALEN ◽

10.22487/j24775398.2016.v2.i1.6042 ◽

2016 ◽

Vol 2 (1) ◽

Author(s):

Noviana Linawati Dewi ◽

Syaiful Bahri ◽

Jaya Hardi

Keyword(s):

Factorial Design ◽

Time Pressure ◽

Distilled Water ◽

Achatina Fulica ◽

Hydrolysis Time ◽

Glucosamine Hydrochloride ◽

Snail Shell ◽

Randomized Design ◽

Completely Randomized Design

ABSTRACT This study aims to determine the effect of pressure and time hydrolysis to produce glucosamine hydrochloride with the highest yield and the best quality of the chitosan of a snail shell. The study used a completely randomized design (CRD) factorial design consisting of 2 factors with 5 variations of hydrolysis time (40; 50; 60; 70 and 80) minutes and 2 variations of pressure (1 atm and 2 atm). Each treatment is done twice so obtained 20 experimental units. The highest glucosamine hydrochloride was obtained in hydrolysis time of 80 minutes and a pressure of 1 atm. Yield of 7,54%. Test of solubility in distilled water at 20°C was obtained of 3,79. Mol/L, while the maximum absorption of the UV-Vis with the addition of reagent Schales is at a wavelength of 420 nm. Keywords: Snails, Chitosan, Glucosamine, Hydrolysis Time, Pressure

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Phase identification and morphology of CaCO3/CaO from Achatina Fulica snail shell as the base material for Hydroxyapatite

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1034/1/012128 ◽

2021 ◽

Vol 1034 (1) ◽

pp. 012128

Author(s):

Poppy Puspitasari ◽

Andre Faiz Fauzi ◽

Hendra Susanto ◽

Avita Ayu Permanasari ◽

Rara Warih Gayatri ◽

...

Keyword(s):

Base Material ◽

Phase Identification ◽

Achatina Fulica ◽

Snail Shell

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Toward an Ethnoarchaeomalacology of Achatina in East Africa

Ethnobiology Letters ◽

10.14237/ebl.8.1.2017.751 ◽

2017 ◽

Vol 8 (1) ◽

Cited By ~ 3

Author(s):

Jonathan Walz

Keyword(s):

Late Holocene ◽

Land Snail ◽

Land Snails ◽

Eastern Africa ◽

Snail Species ◽

Natural Occurrence ◽

Archaeological Record ◽

Achatina Fulica ◽

Snail Shell ◽

Human Subsistence

Land snail shell is a material commonly identified in the Late Holocene archaeological record of eastern Africa. Typically, archaeologists designate land snail shell as a natural occurrence or as debris produced from human subsistence. Ethnographic observations in lowland northeastern Tanzania show that contemporary communities employ the soft parts and shells of land snails, particularly Achatina fulica, for a range of everyday and special purposes. The array of land snail uses by mixed subsistence farmers and agropastoralists in the area documents the significance of A. fulica and other robust land snail species. Present uses of land snails observed in Tanzania offer a set of analogies that, when critically applied, can enrich archaeologists’ interpretations of land snail debris in antiquity.

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Low cost heterogenous catalyst from (Achatina Fulica) snail shell and its application for biodiesel conversion via microwave irradiation

Journal of Physics Conference Series ◽

10.1088/1742-6596/909/1/012082 ◽

2017 ◽

Vol 909 ◽

pp. 012082

Author(s):

Is Fatimah ◽

E. A. Kurniastuti ◽

I. A. Basthiani ◽

A. Fakhri

Keyword(s):

Microwave Irradiation ◽

Low Cost ◽

Achatina Fulica ◽

Snail Shell ◽

Heterogenous Catalyst

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Preparation and properties of floral CaO/ZnO composite from Achatina fulica snail shell

Environmental Science and Pollution Research ◽

10.1007/s11356-021-16260-9 ◽

2021 ◽

Author(s):

Qiushi Jiang ◽

Zhaolian Han ◽

Yafeng Yuan ◽

Zhiqiang Cheng

Keyword(s):

Achatina Fulica ◽

Snail Shell

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Karakterisasi dan Efektifitas Cangkang Bekicot (Achatina fulica) Sebagai Biosorben dalam Menyerap Logam Berat Fe pada Air Limbah Sintetik

Jurnal Serambi Engineering ◽

10.32672/jse.v6i4.3524 ◽

2021 ◽

Vol 6 (4) ◽

Author(s):

Deasy Amanda Valentine ◽

Azhar Azhar ◽

Mitha Putri Paradila

Keyword(s):

Wave Number ◽

Achatina Fulica ◽

Snail Shell ◽

Metal Retention ◽

Shell Powder

The metal remittance in this review is Fe metal, since Fe is one of the metals that is generally contained in water. Whenever devoured water containing Fe that surpasses the limit, it will be awful for wellbeing. The purpose for this research was to portray the biosorbent of snail shell powder and to test the presentation of the biosorbent in the retention of substantial metal iron (Fe). From the aftereffects of the FTIR test, it is assessed that there has been an adjustment of chitin to chitosan. The chitosan spectra acquired showed the presence of a retention band at a wave number of 3066 cm-1 because of the extending vibration of the - Goodness bunch. while for the portrayal utilizing SEM, the molecule size of the biosorbent has different sizes, to be specific with a size scope of 2.16 - 3.44 m to 2.54 - 12.12µm. The development of a coral-like surface is the most definitive factor in the partition of the weighty metal retention interaction of Fe. The computation of the viability esteem showed that the adequacy of snail shell powder in engrossing 10 ppm Fe metal was at a mass of 20 g with a mixing season of 30 minutes, which was 99.2%.

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