Wisnu Satyajaya

Mr. Wisnu Satyajaya

Lampung University, Bandar Lampung, Lampung, Indonesia
orcid

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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14 August 2021 in Heliyon
Verified
Journal Article
Open access
SHSri Hidayati
Sri Hidayati
ZUZulferiyenni
Zulferiyenni
UMUlfa Maulidia
Ulfa Maulidia
WSWisnu Satyajaya
Wisnu Satyajaya
SHSutopo Hadi
Sutopo Hadi
Eucheuma cottonii waste seaweed has high cellulose content. Therefore, it could be potentially used as a raw material for biodegradable films to replace plastic. A plastic film is its moisture resistance, and this property allows plastic films to be used as packaging materials and biodegraded by microbes. This research aims to obtain a concentration of glycerol and Carboxy Methyl Cellulose (CMC) to obtain the best biodegradable film characteristics from E. cottonii seaweed waste. This study was conducted in factorial by using a complete randomized block design with two factors: glycerol concentration and CMC concentration. Each treatment has three levels and three replications (3 × 3). The first factor was glycerol concentration: 0.25% (G1), 0.5% (G2), and 0.75% (G3). The second factor included concentrations of 1% CMC (C1), 2% CMC (C2), and 3% CMC (C3). Then, Tensile Strength (TS), thickness, solubility, and elongation were observed. Functional group analysis was conducted by Fourier-transform infrared spectroscopy and biodegradability test. The results showed that the addition of glycerol concentrations of 0.5 and 0.7% and CMC from 1 to 3% produced tensile strengths of 23–39 MPa. These values are proportional to the tensile strength of Poly Tetra Fluoro ethyne (PTFE) and Poly Propylene (PP) synthetic plastics released by Dotmar Engineering Plastics. The biodegradability test showed that the produced biodegradable films decomposed after 14 days.

11 August 2022 in Nutrients
Verified
Journal Article
Open access
PDF file
David L DeanDavid L Dean
David L Dean
Meike RombachMeike Rombach
Meike Rombach
WKWim de Koning
Wim de Koning
Frank VriesekoopFrank Vriesekoop
Frank Vriesekoop
WSWisnu Satyajaya
Wisnu Satyajaya
LALuis Kluwe de Aguiar
Luis Kluwe de Aguiar
Mycoprotein is a fungal-based meat alternative sold in food retail in various countries around the world. The present study builds on a multi-national sample and uses partial least square structural equation modeling. The proposed conceptual model identified key factors that are driving and inhibiting consumer willingness to try, buy, and pay a price premium for mycoprotein. The results relate to the overall sample of 4088 respondents and to two subsample comparisons based on gender and meat consumption behavior. The results show that the biggest drivers of willingness to consume mycoprotein were healthiness, followed by nutritional benefits, safe to eat, and sustainability. Affordability and taste had mixed results. Willingness to consume mycoprotein was inhibited if nutritional importance was placed on meat and, to a lesser extent, if the taste, texture, and smell of meat were deemed important. Best practice recommendations address issues facing marketing managers in the food industry.

1 September 2020 in Journal of Materials Research and Technology
Verified
Journal Article
Open access
SHSri Hidayati
Sri Hidayati
WSWisnu Satyajaya
Wisnu Satyajaya
AFAhmad Fudholi
Ahmad Fudholi

16 April 2018 in IOP Conference Series: Materials Science and Engineering
Verified
Conference Paper
Open access
PDF file
SHSri Hidayati
Sri Hidayati
AZA S Zuidar
A S Zuidar
WSWisnu Satyajaya
Wisnu Satyajaya
MUMurhadi
Murhadi
DRD Retnowati
D Retnowati

1 May 2019 in IOP Conference Series: Materials Science and Engineering
Verified
Conference Paper
Open access
PDF file
SHSri Hidayati
Sri Hidayati
ESE Suroso
E Suroso
WSWisnu Satyajaya
Wisnu Satyajaya
DID A Iryani
D A Iryani
Bamboo is one of the non-wood materials which can be utilized as raw materials of pulp. The purpose of this work was to study the effect of the ratio of acetic acid:formic acid on the chemical properties of pulp from bamboo. The results of the study showed that increases of the ratio of formic acid able to degraded of cellulose, hemicellulose, lignin content and decreases the pulp yield. The best condition of this research showed on the ratio of acetic acid: formic acid = 90:10. This condition produced the pulp with composition consist are cellulose 66,98%, hemicelluloses 16,83%, and lignin 3,59%, with the yield of pulp is 42,279%