Acrylamide being known as carcinogenic and hydroxymethyl furfural (HMF) being known as cytotoxic compounds
are heat induced process contaminants found in instant coffee. Today's instant coffee production method
involves roasting of coffee beans, grinding, flavor and aroma separation, extraction, concentration, and drying
steps. During roasting, acrylamide and HMF are formed in varying amounts depending upon the degree of
heat treatment as a result of the Maillard reaction. This study was conducted in order to reduce the concentrations
of acrylamide and HMF in instant coffee. Instant coffee (20%, w/v) was mixed with sucrose (0–10, w/v)
and baker's yeast (Saccharomyces cerevisiae, 1–2%, w/v) in a tightly closed glass vessel. The mixture was
fermented at 30 °C for 48 h. The kinetics of acrylamide and HMF degradation was investigated. HMF and acrylamide
contents were reduced exponentially at varying rates, depending upon fermentation medium and time. After
24 h, HMF concentration was decreased by 61.2%, 75.7%, 93.6% and 99.2% in the fermentation media containing
none, 1%, 5%, and 10% of sucrose, respectively. After 48 h, acrylamide concentration was decreased by about
70%. These results revealed that yeast fermentation is promising for the mitigation of HMF and acrylamide in
instant coffee.
hydroxymethyl เฟอร์ฟูรัล
HMF กาแฟสำเร็จรูปในกาแฟสำเร็จรูป(20% w / v) ผสมกับน้ำตาลซูโครส (0-10, w / v) และยีสต์ขนมปัง (Saccharomyces cerevisiae 1-2% w / v) 30 องศาเซลเซียสเป็นเวลา 48 HMFชั่วโมงเข้มข้น HMF ลดลง 61.2%, 75.7%, 93.6% และ 99.2% ในสื่อที่มีการหมักไม่มี, 1%, 5%, 10% และน้ำตาลซูโครสของตามลำดับหลังจาก48HMF และริลาไมด์ในกาแฟสำเร็จรูป
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