Cited by 51Coffee research and impactsSensory Analysis and Statistical MethodsFood Chemistry and Fat Analysis

Determining the impact of roasting degree, coffee to water ratio and brewing method on the sensory characteristics of cold brew Ugandan coffee

Open access
Seninde, Denis Richard, Chambers, Edgar, Chambers, Delores·2020·Food Research International

Abstract

In today's market, there is a growing demand for high-quality coffee with distinctive sensory characteristics, such a cold brew (CB) coffee. The objectives of this study were to determine the impact of a) degree of roasting, b) coffee to water ratio (C2WR), and c) brewing method on the sensory characteristics of CB coffee from d) various Ugandan coffee beans, both Robusta and Arabica. Four distinct coffee samples, sourced from lowland and mountainous regions in Uganda, were roasted and tested using a factorial design. A highly trained sensory panel evaluated the samples using 42 attributes. Results showed that all factors studied had an impact on most of the attributes. Not surprisingly, Robusta coffees generally had more bitter taste than Arabica coffees and the dark roast samples generally were more bitter than the medium roast coffees. Also, coffee samples that were brewed using a higher C2WR generally were more bitter than the coffees using a lower C2WR. However, although most of the main effects had a significant impact, their effects were mitigated by their interaction with other factors. For example, Medium roast Robusta that was slow-dripped with a high C2WR had a more bitter taste than the corresponding Arabica samples. However, when the Medium roast Robusta was steeped with a high C2WR it had a similar bitter intensity with the corresponding Arabica samples. Thus, although major impacts are critical, individual sample combinations must be considered when evaluating coffee samples for their impact on the sensory characteristics.

Integrity signals

Registry

Crossref · 10.1016/j.foodres.2020.109667

Cites

72 of 72 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Most coffee sensory studies of brewed coffee focused on pressurized espresso brew or flow-based drip brew, while there are comparatively fewer sensory studies on full immersion brewing methods other than a few recent ones focused on cold brew.

    “While most coffee sensory studies of brewed coffee focused on pressurized espresso brew or flow-based drip brew2,4,6–10, there are comparatively less sensory studies on full immersion brewing methods other than a few recent ones focused on cold brew10–14.”
  • A higher C2WR indicates that a higher amount of volatile and non-volatile compounds may naturally be present.

    “A higher C2WR indicates that a higher amount of volatile and non-volatile compounds may naturally be present [23] and thus would produce a higher TDS.”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Seninde, D. R., Chambers, E., & Chambers, D.
Affiliations
Kansas State University (US)
Corresponding author
Chambers, Edgar
Venue
Food Research International
Publisher
Elsevier BV
Published
2020-11
Volume
137
Pages
109667
ISSN
0963-9969 (ISSN-L)
OpenAlex
W2919933537
Cited by
51
References
72
Citations by year
2026: 4 · 2025: 10 · 2024: 13 · 2023: 6 · 2022: 8 · 2021: 8 · 2020: 2
FWCI
3.60
Type
journal article
Language
en
Open access
Locations
  • Food Research International (acceptedVersion)
  • PubMed (publishedVersion)
  • K-State Research Exchange (Kansas State University) (submittedVersion)
Funders
U.S. Department of Agriculture
Topics
  • Health Sciences › Medicine › Pharmacology › Coffee research and impacts
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Sensory Analysis and Statistical Methods
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Food Chemistry and Fat Analysis
Keywords
cold brew coffee, coffee roasting degree, brewing technology, sensory properties, bitterness, Coffea canephora, Coffea arabica, soaking
MeSH terms
Coffee, Cooking, Uganda, Water, Coffea

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review