Relationship Between Sensory Clarity and Turbidity Values of Apple Juice

Effect of illumination intensity on visual perception of turbidity

“…Pangborn (1982) applied quantified visual assessments of turbidity by highly trained judges to coffee preparations and showed that preparation technique and contact time between water and ground coffee influenced haze intensity. Malcolmson et al (1989) found a linear relationship between estimates of clarity produced by magnitude estimation and instrumental assessments of turbidity on a series of apple juices.…”

“…Turbidimetry has been widely used to study the intensity of light scattering in a wide variety of beverages including apple juice (Malcolmson, Jeffrey, Sharma, & Ng, 1989), beer (Morris, 1987), and wine (Dubourdieu, Serrano, Vannier, & Ribereau, 1988). Nephelometry (90°scattering) provides an estimate of turbidity that has been widely used in the brewing industry (Thorne & Nannestad, 1959;Thorne & Svendsen, 1962).…”

Color and Appearance

“…Relationships between instrumental measures of light scattering and human sensory ratings have been determined. Malcolmson et al (1989) found a linear relationship between instrumentally measured turbidity and perceived clarity for commercial apple juices. Other studies have found relationships between physical measurements of cloudiness and sensory evaluations in different media including coffee (Pangborn, 1982) and beer (Hough et al, 1982;Leedham and Carpenter, 1977;Venkatasubramanian et al, 1975).…”