Egg Lutein Controversy: Huangtianhe Takes Stand Against Professional Complaint Filers

On the eve of March 15th, professional anti-fraud investigator Wang Hai and his team posted a video on social media claiming that multiple brands, including Huang Tiane, tested positive for “beta-cryptoxanthin,” raising questions about artificial synthetic coloring agents being added. Huang Tiane responded publicly, strongly opposing Wang Hai, stating that they did not use artificial beta-cryptoxanthin, and that the trace amounts detected are at natural background levels. They also announced that local market regulatory authorities had conducted on-site sampling and are awaiting official test results.

In recent years, many self-media outlets and civilian organizations have claimed to evaluate products by sending samples for testing and publicly sharing the results on social media to attract public attention. However, Wang Hai’s personal testing and anti-fraud approach in this beta-cryptoxanthin incident has also sparked considerable controversy.

Debate Over the Source of “Beta-Cryptoxanthin”

The reporter noted multiple exchanges online between both parties, with the core dispute revolving around the origin of the beta-cryptoxanthin detected in the eggs.

According to a video released by Wang Hai’s evaluation, the Huang Tiane eggs tested contained 0.399 mg/kg of beta-cryptoxanthin. Eggs purchased from Yonghui Supermarket, also branded Huang Tiane, showed a higher level of 1.65 mg/kg. Wang Hai posted on social media claiming that natural feed eggs cannot contain beta-cryptoxanthin and suggested it comes from artificial coloring added to feed.

Huang Tiane was established in 2019, under parent company Fengji Food. Since its founding, the brand has targeted the high-end egg market, emphasizing “raw consumption” and “no artificial coloring,” securing multiple rounds of funding from institutions including China International Capital Corporation and Puru Capital. It is one of the leading high-end egg brands in China. As a result, Wang Hai’s claim of artificial coloring addition has garnered widespread market attention.

Huang Tiane responded publicly, stating that beta-cryptoxanthin naturally exists in algae, fungi (mushrooms), shellfish, fish, and eggs. The detected levels in Huang Tiane eggs are at natural background levels, not artificially added. According to their published literature, a yolk color of 9 degrees requires beta-cryptoxanthin levels exceeding 2 mg/kg. To reach a yolk color of over 12 degrees, the detected 0.399 mg/kg is far from sufficient.

Additionally, Huang Tiane stated that from a commercial perspective, there is no motivation to add beta-cryptoxanthin. Adding it would not significantly enhance yolk color and would only marginally increase costs, not justifying the expense. Their current feed production equipment also lacks the capacity to add beta-cryptoxanthin, which could cause uneven mixing and other risks.

However, Wang Hai posted on his personal social media that 100% of the beta-cryptoxanthin in eggs comes from feed additives, with no natural source, and that chickens cannot synthesize beta-cryptoxanthin on their own. He accused Huang Tiane’s response of lacking integrity.

Liu Wenbin, head of quality management at Fengji Food Group, told First Financial that the company’s feed is self-produced, with raw materials purchased from fixed suppliers, and there is no addition of beta-cryptoxanthin. He also questioned the authenticity and objectivity of Wang Hai’s testing purpose and the actual condition of the samples sent for testing. For example, the production date on the testing report provided by Wang Hai is December 16, 2025, but the product’s shelf life is only 30 days, and the entire testing period (January 13-19) fully covers and even exceeds the product’s expiration date.

Huang Tiane’s official WeChat account also issued a statement, saying that local market regulators have completed sampling and testing of their products. The samples have been sent to an authoritative testing agency, and they are currently awaiting official results, which will be announced promptly on their official channels.

The Role of Beta-Cryptoxanthin in the Controversy

Public information indicates that beta-cryptoxanthin, also known as canthaxanthin, is a carotenoid pigment widely present in nature. It is used as a food additive, dietary supplement, or animal feed coloring agent, including in eggs. The yolk color mainly depends on carotenoid content in chicken feed.

According to the “Regulations on the Safe Use of Feed Additives,” beta-cryptoxanthin is a legal coloring agent permitted in poultry production, with a maximum addition limit of 8 mg/kg in poultry feed. However, there are no specific standards for finished eggs, so it has been relatively little known publicly.

At an industry forum, Professor Ma Meihu from the College of Food Science and Technology at Huazhong Agricultural University explained that beta-cryptoxanthin is abundant in algae and fungi. When hens consume natural feed, beta-cryptoxanthin naturally deposits in their bodies. Experts noted that natural extraction and synthetic versions of beta-cryptoxanthin have identical chemical structures. Routine high-performance liquid chromatography (HPLC) and liquid chromatography-mass spectrometry (LC-MS) can only measure total content, not distinguish sources.

Researcher Wu Shugen from the Feed Research Institute of the Chinese Academy of Agricultural Sciences told First Financial that current public concern has shifted. Beta-cryptoxanthin has been used globally since 1984, is non-staining for mammals, and has antioxidant properties besides coloring. It is harmless and beneficial for hens, chicks, and humans. Over the years, there have been no standards for beta-cryptoxanthin in finished eggs domestically, nor efforts to establish such standards, reflecting that it may not be a significant concern.

According to standards from the FAO/WHO Joint Expert Committee on Food Additives (JECFA), the acceptable daily intake (ADI) for beta-cryptoxanthin is 0.03 mg/kg body weight. For a 70 kg adult, that’s about 2.1 mg per day. Based on Wang Hai’s detected levels, one Huang Tiane egg contains approximately 0.02 mg of beta-cryptoxanthin, well within safe limits.

However, Wu Shugen believes this controversy serves as a warning to the industry. On one hand, regulatory agencies and companies should increase investment in additive research—such as distinguishing natural from artificial sources and understanding efficacy—to promote efficient and rational use of additives. On the other hand, public education should be strengthened to prevent disconnects between scientific research and popular science.

During a live broadcast on March 16, Huang Tiane’s founder and Fengji Food Group chairman Feng Bin stated that the incident revealed a lack of standards and regulation regarding egg yolk color formation, which could motivate industry improvements. Huang Tiane plans to develop standards related to egg yolk color, providing a basis for production and regulation of naturally or artificially colored eggs and yolks.

Personal Sample Testing and Anti-Fraud Measures Must Stay Within Legal Boundaries

In recent years, sending samples for testing as a form of anti-fraud has become a mainstream approach among self-media outlets and professional anti-fraud individuals. In this incident, Wang Hai’s testing brought significant social attention and traffic, but also sparked many online doubts.

Wang Hai’s team announced that the testing agency (SAMCDC) was Qingdao Yuanxin Testing Technology Co., Ltd. (Qingdao Yuanxin). According to their website, the company was established in 2014 and is recognized by the Shandong Provincial Bureau of Quality and Technical Supervision (CMA) and the China National Accreditation Service for Conformity Assessment (CNAS). It is a third-party testing service affiliated with Guohe General Testing Evaluation Certification Co., Ltd.

The testing report provided by Wang Hai’s team for Huang Tiane eggs shows only one item: beta-cryptoxanthin. The report states that, “According to the client’s request, only testing data is provided,” and does not specify the source of beta-cryptoxanthin.

This has led to polarized opinions online. Some believe that consumers lack the ability to distinguish, and that testing protects consumer interests. Others criticize that Wang Hai’s team detected beta-cryptoxanthin but did not clarify its source, yet declared it as artificial addition, which could unfairly damage the brand. Some also question whether professional anti-fraud testing is always purely public-spirited or if there are other motives.

Lawyer Xu Hao from Beijing Jing Shi Law Firm told reporters that personal testing for anti-fraud is lawful and reasonable, but crossing legal boundaries can turn social supervision into illegal infringement. Under laws such as the “Consumer Rights Protection Law” and “Food Safety Law,” objective testing can fill regulatory gaps and promote compliance. However, rights must not be abused. For example, unnotarized sampling, misinterpretation of data, equating trace amounts with illegal addition, or exaggerating risks for traffic can violate the “Civil Code” and “Anti-Unfair Competition Law.” Using exposure to extort money also violates criminal law.

Xu Hao advised that individuals conducting testing should stay within legal limits, ensure genuine consumption, keep full records, and choose qualified institutions. Data should be objectively presented without illegal qualitative judgments. Overstepping boundaries could lead to legal risks.