Livingstone Sam-Amoah

• BSc, MSc, MPhil, PhD
• Professor (Full) at University of Cape Coast

Titratable acidity (TA) and fermentation index (FI) are important quality indicators of cocoa beans. This paper attempted the simultaneous analysis of these indicators by electronic tongue (ET) and two multivariate calibrations. ET was used for data acquisition, while partial least squares (PLSs) and principal component support vector machine regre...

Total polyphenols content (TPC) is an important measure of phytochemicals in cocoa beans due to its numerous health benefits. This work attempts to measure the total polyphenols content in cocoa beans by using a novel approach of integrating near infrared spectroscopy (NIRS) and electronic tongue (ET). 110 samples of cocoa beans with different poly...

The effects of different pretreatments and temperature on the drying characteristics of ripe Gros Michel banana slices were investigated. 5 and 7 mm thick slices of bananas were pretreated with four different pretreatments such as ascorbic acid, lemon juice, salt solution, honey dip and a control for 10 minutes, each replicated three times. Pretrea...

The storage of sweet potato (Ipomoea batatas L.) is confronted with a myriad of post harvest challenges resulting in heavy losses during marketing and storage in tropical Africa. In this study two storage structures were evaluated and compared for the storage of two sweet potato varieties. A completely randomized design (CRD) was used and the roots...

The aim of the research was to determine the effect of irrigation interval on chlorophyll fluorescence of tomato (Lycopersicon esculentum Mill) under sprinkler irrigation using Compact Violet Laser-Induced Fluorosensor (CVLIF) to measure leaf photosynthetic performance. Four irrigation intervals; one day (T 1), three days (T 2), five days (T 3) and...

The aim of the study was to examine the effects of four sources of irrigation water on soil chemical and physical properties at Kpong in the Manya Krobo District. The chemical and physical variables were measured using the top soil (0-15 cm) to compare soils irrigated with four sources of water. The sources of irrigation water used by the farmers i...

This study was conducted to examine the effects of four sources of water on the growth of tomato ( Lycopersicon esculentum ) at Kpong in the Manya Krobo District of Eastern Region in Ghana. The sources of irrigation water were: river, canal, tap and well. The quality of these sources was monitored for a period of five months (August-December 2007)....

This research was conducted to determine the performance of two sprinkler heads and to use one of them to determine suitable irrigation interval for the optimum growth and yield of tomatoes. Technical evaluation of sprinkler system performance was done using the sprinkler heads, i.e., LEGO and AGROS and Parameters measured and their values for them...

Different varieties of cassava were processed into gari to determine the material losses and the rate of gari yield as they are affected by the age of maturity, varietal traits and the processing method and equipment. The varieties were harvested at the ages of 10, 12 and 14 months, respectively. The study showed that varietal differences and age a...

This paper highlights an approach to assessing the performance of the water delivery system from the perspective of farmers. The methodology uses the concept of fuzzy set theory to analyse the responses from farmers concerning their perception of the irrigation service provided. The paper takes the view that as part of performance assessment of sch...

Government disengagement from day-to-daymanagement of irrigation infrastructure hasbecome a widespread strategy in Asia,Africa and Latin America. This paperexamines a case study of managementtransfer of a rice irrigation scheme inGhana. The criteria used relate toagricultural, financial and economicperformance and environmental sustainability.The s...

Thesis (M. Phil.)--University of Newcastle upon Tyne, 1993.