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Archive | 1994

Relationships between Physical Properties and Chemical Components of Okinawan Brown Sugar

Takayoshi Akinaga; Yoshihiro Kohda

Some physical properties and chemical components of brown sugar produced in Okinawa were investigated to improve the quality standard and manufacturing methods. Hardness, viscosity, color, moisture content, water activity, and density of brown sugar were measured as the components of physical properties. Content of K, P, Ca, Mg, Na, N, and Cl in the brown sugar were measured. As the result of investigation, it became clear that the physical properties of brown sugars varied with the island where the sugar was produced; and P, N, and Ca significantly affected the quality of sugar.


NIPPON SHOKUHIN KOGYO GAKKAISHI | 1980

Visco-elastic Behavior of Air classified Wheat Flour Dough

Yoshihiro Kohda; Toshimichi Baba; Takayoshi Akinaga; Hiromi Izumi

小麦粉の蛋白質含量を変えて用途を拡大する技法の開発の一環として,空気分級をした小麦粉の粘弾性的挙動を求めた。WW種小麦に内麦30%及び10%を加えた粉を,前者については微粉砕したうえで,それぞれ空気分級して蛋白質含量の異なる5画分を作り,加水量が50%になるように水を加えてドウとし,水平振動位相差法で動的粘弾性を求めたところ,振動数の増大に応じて弾性値も増大し粘性値は減少した。また蛋白質含量が増大すると蛋白質含量の高い範囲では蛋白質含量に応じて粘弾性も増大した。蛋白質含量が少ないときに必ずしも蛋白質含量に比例して粘弾性が増大しない理由として,グリアジンとグルテニンの含量配分の差を生じたか,またグルテンの網目形成に関する脂質の影響の可能性を検討したが,いずれからも明確な結論を得られなかった。空気分級で蛋白質含量を増大させた場合とグルテンを加えて蛋白質含量を増大させた場合の効果を比較したところ,同じ蛋白質含量では空気分級をした粉の方が常に粘弾性が大であった。


Journal of Texture Studies | 2000

EVALUATION OF THE TEXTURAL PROPERTIES OF JAPANESE PEAR

Panmanas Sirisomboon; Munehiro Tanaka; Takayoshi Akinaga; Takayuki Kojima


Archive | 2008

On-tree and after-harvesting evaluation of firmness, color and lycopene content of tomato fruit using portable NIR spectroscopy

Takayoshi Akinaga; Munehiro Tanaka; Sheishi Kawasaki; Nishihara Cho


Journal of the Society of Agricultural Structures, Japan | 2000

Gas Permeability Characteristics of Plastic Films for Packaging of Fresh Produce

Rokhani Hasbullah; Gardjito; Atjeng M. Syarief; Takayoshi Akinaga


Journal of Food Composition and Analysis | 2001

A Simplified Method for the Determination of Total Oxalate-Soluble Pectin Content in Japanese Pear

Panmanas Sirisomboon; Munehiro Tanaka; Shuji Fujita; Takayoshi Akinaga; Takayuki Kojima


Journal of the Society of Agricultural Structures, Japan | 2001

Effect of Heat Treatments on Respiration and Quality of ‘Irwin’ Mango

Rokhani Hasbullah; Seishi Kawasaki; Takayuki Kojima; Takayoshi Akinaga


Journal of the Society of Agricultural Structures, Japan | 1995

Internal Quality Measurement of Tropical Fruits by Near Infrared Spectroscopic Technique

Tetsuya Tanabe; Takayoshi Akinaga; Yoshihiro Kohda; Yoshihide Kouno; Hiromu Maeda; Toshihiro Mizuno


Acta Horticulturae | 2002

Mango production using plastic greenhouse in Okinawa

Takayoshi Akinaga; Rokhani Hasbullah


Journal of the Society of Agricultural Structures, Japan | 2002

Non-destructive Prediction of Internal Quality of Heat-treated ‘Irwin’ Mango by Near Infrared Spectroscopy

Rokhani Hasbullah; Tetsuya Tanabe; Munehiro Tanaka; Takayoshi Akinaga

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Yoshihiro Kohda

University of the Ryukyus

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Hiromi Izumi

University of the Ryukyus

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Seishi Kawasaki

University of the Ryukyus

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Rokhani Hasbullah

Bogor Agricultural University

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Masami Ueno

University of the Ryukyus

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Tetsuya Tanabe

University of the Ryukyus

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Liya Sun

University of the Ryukyus

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