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Herlina .
Fak. Teknologi Pertanian Universitas Jember
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Nursing Public Health

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Journal : UNEJ e-Proceeding

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Physical Properties of Gel and Edible Plastic from Whey and Tapioca In Various Ratio and pH Value Lindriati, Triana; ., Herlina; Nafi, Ahmad
UNEJ e-Proceeding Indonesian Protein Society (IPS), International Seminar and Workshop 2014
Publisher : UNEJ e-Proceeding

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Abstract

Edible plastic usually made from hydrocolloids and could be produced by solvent casting method whereas gel was made before casting. Potential of whey protein combined with tapioca as edible plastic based component was studied at this research. pH of solvent could affect interaction of whey and tapioca during  gel preparation. The gel’s characters affected on plastic’s characters . The research objectives were to study effect of whey and tapioca ratio and pH of solvent on physical properties of gel and edible plastics. Randomized Factorial Block Design were used. The two factors  were  porpotion of whey protein-starch mixture (0%, 20%, 40%, 60%, 80%, 100%) and pH of solvent ( 4, 7 and 9). Increasing of whey porpotion could increase solubility of gel but decrease gel’s lightness and texture. Increasing of pH could increase gel’s solubility and decrease lightness and texture. There was significant effect (p≤0,05) of whey porpotion and pH interaction on gel’s characters. Increasing of whey porpotion could increase tensile strength and decrease elongation and solubility of edible plastics but the increasing of tensile strength was not significant (p≥0,05). Increasing of pH could increase elongation and decrease tensile strength and plastic’s solubility. There wasn’t significant effect (p≥0,05) of whey porpotion and pH interaction on edible plastic’s characters. The result showed that whey addition had decreased plastic’s characters even at 100% whey ratio tensile strength and elongation value were zero, edible plastic could not be produced from 100% whey. Keywords: texture, solubility, elongation, tensile strength, interaction
Technical Functional Properties of Crude Water Soluble Polysaccharide From Durian Seed (Durio zibethinus Murr.) ., Herlina; Lindriati, Triana; Novijanto, Noer; Anggraini, Ayu
UNEJ e-Proceeding Indonesian Protein Society (IPS), International Seminar and Workshop 2014
Publisher : UNEJ e-Proceeding

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Durian seeds can be utilized as a producer of Water Soluble Polysaccharide (WSP) that can be applied to food products because crude extract of WSP is hydrocolloid. WSP interacts with other components, directly and indirectly affect processing applications, food quality, and acceptance.Water binding, solubility, viscosity and surface activity are important properties, determining usefulness and final product quality in a food system. The absence of extraction conditions that support so that the need for improved methods to variations in temperature and long extraction. This study aim to determine the effect of temperature and long extraction that produces the highest yield value and to determine the functional properties of the WSP.  The results of this study are the highest yield values in the 50 oC temperature extraction ang long extraction 2 hours amounted to 2,26%, solubility in water of 51,61%; lightness 34,14; water holding capacity (WHC) 2339,35%;  oil holding capacity (OHC) 425,36%; emulsion power 55,77m2/g; emulsion stability 585,50 minutes, foaming power 157,39 ml/g; foaming stability 25,43%. Long extraction increase the value of WHC and OHC but discrease the value of water solubility, foaming power and lightness. Keywords: durian seed, water soluble polysaccharide, extraction, technical functional properties.
Co-Authors AA, Arwin Agrina ., Agrina Ahmad Hasyim Ahmad Nafi Ahmad Nafi Ahmad Nafi' Aritonang, Barita Ayu Anggraini Debi Meilani Herry Purnomo, Bambang Karnirius Harefa Luh Putu Ratna Sundari Maharlika Pemuda Bhakti Nagara Manik Nur Hidayati Miftahul Choiron Muhammad Syaiful Adzim Nita Kuswardhani Noer Novijanto Nurhayati Nurhayati Nuri, . Nuri, . Prahasbynar Prahasbynar Reni Zulfitri Rotua Sumihar Sitorus Sagita, Rita Siswoyo Soekarno Sulistyani Sulistyani Triana Lindriati Tutik Windaryati Tutik Windaryati Yudi Wicaksono Yuli Witono